20808920160

素因数分解:

$2^5\times 3^2\times 5^1\times 7^2\times {\mathrm{294911}}^1$

素因数の和:294946

約数の個数: 216

約数和(自身を含む): 82604261376

約数和(自身を除く): 61795341216

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 140, 144, 147, 160, 168, 180, 196, 210, 224, 240, 245, 252, 280, 288, 294, 315, 336, 360, 392, 420, 441, 480, 490, 504, 560, 588, 630, 672, 720, 735, 784, 840, 882, 980, 1008, 1120, 1176, 1260, 1440, 1470, 1568, 1680, 1764, 1960, 2016, 2205, 2352, 2520, 2940, 3360, 3528, 3920, 4410, 4704, 5040, 5880, 7056, 7840, 8820, 10080, 11760, 14112, 17640, 23520, 35280, 70560, 294911, 589822, 884733, 1179644, 1474555, 1769466, 2064377, 2359288, 2654199, 2949110, 3538932, 4128754, 4423665, 4718576, 5308398, 5898220, 6193131, 7077864, 8257508, 8847330, 9437152, 10321885, 10616796, 11796440, 12386262, 13270995, 14155728, 14450639, 16515016, 17694660, 18579393, 20643770, 21233592, 23592880, 24772524, 26541990, 28311456, 28901278, 30965655, 33030032, 35389320, 37158786, 41287540, 42467184, 43351917, 47185760, 49545048, 53083980, 57802556, 61931310, 66060064, 70778640, 72253195, 74317572, 82575080, 84934368, 86703834, 92896965, 99090096, 106167960, 115605112, 123862620, 130055751, 141557280, 144506390, 148635144, 165150160, 173407668, 185793930, 198180192, 212335920, 216759585, 231210224, 247725240, 260111502, 289012780, 297270288, 330300320, 346815336, 371587860, 424671840, 433519170, 462420448, 495450480, 520223004, 578025560, 594540576, 650278755, 693630672, 743175720, 867038340, 990900960, 1040446008, 1156051120, 1300557510, 1387261344, 1486351440, 1734076680, 2080892016, 2312102240, 2601115020, 2972702880, 3468153360, 4161784032, 5202230040, 6936306720, 10404460080, 20808920160]

約数ペア:

[(1, 20808920160), (2, 10404460080), (3, 6936306720), (4, 5202230040), (5, 4161784032), (6, 3468153360), (7, 2972702880), (8, 2601115020), (9, 2312102240), (10, 2080892016), (12, 1734076680), (14, 1486351440), (15, 1387261344), (16, 1300557510), (18, 1156051120), (20, 1040446008), (21, 990900960), (24, 867038340), (28, 743175720), (30, 693630672), (32, 650278755), (35, 594540576), (36, 578025560), (40, 520223004), (42, 495450480), (45, 462420448), (48, 433519170), (49, 424671840), (56, 371587860), (60, 346815336), (63, 330300320), (70, 297270288), (72, 289012780), (80, 260111502), (84, 247725240), (90, 231210224), (96, 216759585), (98, 212335920), (105, 198180192), (112, 185793930), (120, 173407668), (126, 165150160), (140, 148635144), (144, 144506390), (147, 141557280), (160, 130055751), (168, 123862620), (180, 115605112), (196, 106167960), (210, 99090096), (224, 92896965), (240, 86703834), (245, 84934368), (252, 82575080), (280, 74317572), (288, 72253195), (294, 70778640), (315, 66060064), (336, 61931310), (360, 57802556), (392, 53083980), (420, 49545048), (441, 47185760), (480, 43351917), (490, 42467184), (504, 41287540), (560, 37158786), (588, 35389320), (630, 33030032), (672, 30965655), (720, 28901278), (735, 28311456), (784, 26541990), (840, 24772524), (882, 23592880), (980, 21233592), (1008, 20643770), (1120, 18579393), (1176, 17694660), (1260, 16515016), (1440, 14450639), (1470, 14155728), (1568, 13270995), (1680, 12386262), (1764, 11796440), (1960, 10616796), (2016, 10321885), (2205, 9437152), (2352, 8847330), (2520, 8257508), (2940, 7077864), (3360, 6193131), (3528, 5898220), (3920, 5308398), (4410, 4718576), (4704, 4423665), (5040, 4128754), (5880, 3538932), (7056, 2949110), (7840, 2654199), (8820, 2359288), (10080, 2064377), (11760, 1769466), (14112, 1474555), (17640, 1179644), (23520, 884733), (35280, 589822), (70560, 294911)]