20805408

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{5557}}^1$

素因数の和:5586

約数の個数: 72

約数和(自身を含む): 63728028

約数和(自身を除く): 42922620

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 72, 78, 96, 104, 117, 144, 156, 208, 234, 288, 312, 416, 468, 624, 936, 1248, 1872, 3744, 5557, 11114, 16671, 22228, 33342, 44456, 50013, 66684, 72241, 88912, 100026, 133368, 144482, 177824, 200052, 216723, 266736, 288964, 400104, 433446, 533472, 577928, 650169, 800208, 866892, 1155856, 1300338, 1600416, 1733784, 2311712, 2600676, 3467568, 5201352, 6935136, 10402704, 20805408]

約数ペア:

[(1, 20805408), (2, 10402704), (3, 6935136), (4, 5201352), (6, 3467568), (8, 2600676), (9, 2311712), (12, 1733784), (13, 1600416), (16, 1300338), (18, 1155856), (24, 866892), (26, 800208), (32, 650169), (36, 577928), (39, 533472), (48, 433446), (52, 400104), (72, 288964), (78, 266736), (96, 216723), (104, 200052), (117, 177824), (144, 144482), (156, 133368), (208, 100026), (234, 88912), (288, 72241), (312, 66684), (416, 50013), (468, 44456), (624, 33342), (936, 22228), (1248, 16671), (1872, 11114), (3744, 5557)]