20807640

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:406

約数の個数: 192

約数和(自身を含む): 80870400

約数和(自身を除く): 60062760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 23, 24, 28, 30, 35, 36, 40, 42, 45, 46, 56, 60, 63, 69, 70, 72, 84, 90, 92, 105, 115, 120, 126, 138, 140, 161, 168, 180, 184, 207, 210, 230, 252, 276, 280, 315, 322, 345, 359, 360, 414, 420, 460, 483, 504, 552, 630, 644, 690, 718, 805, 828, 840, 920, 966, 1035, 1077, 1260, 1288, 1380, 1436, 1449, 1610, 1656, 1795, 1932, 2070, 2154, 2415, 2513, 2520, 2760, 2872, 2898, 3220, 3231, 3590, 3864, 4140, 4308, 4830, 5026, 5385, 5796, 6440, 6462, 7180, 7245, 7539, 8257, 8280, 8616, 9660, 10052, 10770, 11592, 12565, 12924, 14360, 14490, 15078, 16155, 16514, 19320, 20104, 21540, 22617, 24771, 25130, 25848, 28980, 30156, 32310, 33028, 37695, 41285, 43080, 45234, 49542, 50260, 57799, 57960, 60312, 64620, 66056, 74313, 75390, 82570, 90468, 99084, 100520, 113085, 115598, 123855, 129240, 148626, 150780, 165140, 173397, 180936, 198168, 226170, 231196, 247710, 288995, 297252, 301560, 330280, 346794, 371565, 452340, 462392, 495420, 520191, 577990, 594504, 693588, 743130, 866985, 904680, 990840, 1040382, 1155980, 1387176, 1486260, 1733970, 2080764, 2311960, 2600955, 2972520, 3467940, 4161528, 5201910, 6935880, 10403820, 20807640]

約数ペア:

[(1, 20807640), (2, 10403820), (3, 6935880), (4, 5201910), (5, 4161528), (6, 3467940), (7, 2972520), (8, 2600955), (9, 2311960), (10, 2080764), (12, 1733970), (14, 1486260), (15, 1387176), (18, 1155980), (20, 1040382), (21, 990840), (23, 904680), (24, 866985), (28, 743130), (30, 693588), (35, 594504), (36, 577990), (40, 520191), (42, 495420), (45, 462392), (46, 452340), (56, 371565), (60, 346794), (63, 330280), (69, 301560), (70, 297252), (72, 288995), (84, 247710), (90, 231196), (92, 226170), (105, 198168), (115, 180936), (120, 173397), (126, 165140), (138, 150780), (140, 148626), (161, 129240), (168, 123855), (180, 115598), (184, 113085), (207, 100520), (210, 99084), (230, 90468), (252, 82570), (276, 75390), (280, 74313), (315, 66056), (322, 64620), (345, 60312), (359, 57960), (360, 57799), (414, 50260), (420, 49542), (460, 45234), (483, 43080), (504, 41285), (552, 37695), (630, 33028), (644, 32310), (690, 30156), (718, 28980), (805, 25848), (828, 25130), (840, 24771), (920, 22617), (966, 21540), (1035, 20104), (1077, 19320), (1260, 16514), (1288, 16155), (1380, 15078), (1436, 14490), (1449, 14360), (1610, 12924), (1656, 12565), (1795, 11592), (1932, 10770), (2070, 10052), (2154, 9660), (2415, 8616), (2513, 8280), (2520, 8257), (2760, 7539), (2872, 7245), (2898, 7180), (3220, 6462), (3231, 6440), (3590, 5796), (3864, 5385), (4140, 5026), (4308, 4830)]