80447920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1481}}^1$

素因数の和:1598

約数の個数: 80

約数和(自身を含む): 216111168

約数和(自身を除く): 135663248

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 97, 112, 140, 194, 280, 388, 485, 560, 679, 776, 970, 1358, 1481, 1552, 1940, 2716, 2962, 3395, 3880, 5432, 5924, 6790, 7405, 7760, 10367, 10864, 11848, 13580, 14810, 20734, 23696, 27160, 29620, 41468, 51835, 54320, 59240, 82936, 103670, 118480, 143657, 165872, 207340, 287314, 414680, 574628, 718285, 829360, 1005599, 1149256, 1436570, 2011198, 2298512, 2873140, 4022396, 5027995, 5746280, 8044792, 10055990, 11492560, 16089584, 20111980, 40223960, 80447920]

約数ペア:

[(1, 80447920), (2, 40223960), (4, 20111980), (5, 16089584), (7, 11492560), (8, 10055990), (10, 8044792), (14, 5746280), (16, 5027995), (20, 4022396), (28, 2873140), (35, 2298512), (40, 2011198), (56, 1436570), (70, 1149256), (80, 1005599), (97, 829360), (112, 718285), (140, 574628), (194, 414680), (280, 287314), (388, 207340), (485, 165872), (560, 143657), (679, 118480), (776, 103670), (970, 82936), (1358, 59240), (1481, 54320), (1552, 51835), (1940, 41468), (2716, 29620), (2962, 27160), (3395, 23696), (3880, 20734), (5432, 14810), (5924, 13580), (6790, 11848), (7405, 10864), (7760, 10367)]