20147040

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{823}}^1$

素因数の和:861

約数の個数: 144

約数和(自身を含む): 72884448

約数和(自身を除く): 52737408

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 204, 240, 255, 272, 288, 306, 340, 360, 408, 480, 510, 544, 612, 680, 720, 765, 816, 823, 1020, 1224, 1360, 1440, 1530, 1632, 1646, 2040, 2448, 2469, 2720, 3060, 3292, 4080, 4115, 4896, 4938, 6120, 6584, 7407, 8160, 8230, 9876, 12240, 12345, 13168, 13991, 14814, 16460, 19752, 24480, 24690, 26336, 27982, 29628, 32920, 37035, 39504, 41973, 49380, 55964, 59256, 65840, 69955, 74070, 79008, 83946, 98760, 111928, 118512, 125919, 131680, 139910, 148140, 167892, 197520, 209865, 223856, 237024, 251838, 279820, 296280, 335784, 395040, 419730, 447712, 503676, 559640, 592560, 629595, 671568, 839460, 1007352, 1119280, 1185120, 1259190, 1343136, 1678920, 2014704, 2238560, 2518380, 3357840, 4029408, 5036760, 6715680, 10073520, 20147040]

約数ペア:

[(1, 20147040), (2, 10073520), (3, 6715680), (4, 5036760), (5, 4029408), (6, 3357840), (8, 2518380), (9, 2238560), (10, 2014704), (12, 1678920), (15, 1343136), (16, 1259190), (17, 1185120), (18, 1119280), (20, 1007352), (24, 839460), (30, 671568), (32, 629595), (34, 592560), (36, 559640), (40, 503676), (45, 447712), (48, 419730), (51, 395040), (60, 335784), (68, 296280), (72, 279820), (80, 251838), (85, 237024), (90, 223856), (96, 209865), (102, 197520), (120, 167892), (136, 148140), (144, 139910), (153, 131680), (160, 125919), (170, 118512), (180, 111928), (204, 98760), (240, 83946), (255, 79008), (272, 74070), (288, 69955), (306, 65840), (340, 59256), (360, 55964), (408, 49380), (480, 41973), (510, 39504), (544, 37035), (612, 32920), (680, 29628), (720, 27982), (765, 26336), (816, 24690), (823, 24480), (1020, 19752), (1224, 16460), (1360, 14814), (1440, 13991), (1530, 13168), (1632, 12345), (1646, 12240), (2040, 9876), (2448, 8230), (2469, 8160), (2720, 7407), (3060, 6584), (3292, 6120), (4080, 4938), (4115, 4896)]