637909990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{42499}}^1$

素因数の和:42604

約数の個数: 32

約数和(自身を含む): 1224000000

約数和(自身を除く): 586090010

約数列:

[1, 2, 5, 10, 19, 38, 79, 95, 158, 190, 395, 790, 1501, 3002, 7505, 15010, 42499, 84998, 212495, 424990, 807481, 1614962, 3357421, 4037405, 6714842, 8074810, 16787105, 33574210, 63790999, 127581998, 318954995, 637909990]

約数ペア:

[(1, 637909990), (2, 318954995), (5, 127581998), (10, 63790999), (19, 33574210), (38, 16787105), (79, 8074810), (95, 6714842), (158, 4037405), (190, 3357421), (395, 1614962), (790, 807481), (1501, 424990), (3002, 212495), (7505, 84998), (15010, 42499)]