1808931995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{13399}}^1$

素因数の和:13515

約数の個数: 32

約数和(自身を含む): 2449305600

約数和(自身を除く): 640373605

約数列:

[1, 5, 13, 31, 65, 67, 155, 335, 403, 871, 2015, 2077, 4355, 10385, 13399, 27001, 66995, 135005, 174187, 415369, 870935, 897733, 2076845, 4488665, 5399797, 11670529, 26998985, 27829723, 58352645, 139148615, 361786399, 1808931995]

約数ペア:

[(1, 1808931995), (5, 361786399), (13, 139148615), (31, 58352645), (65, 27829723), (67, 26998985), (155, 11670529), (335, 5399797), (403, 4488665), (871, 2076845), (2015, 897733), (2077, 870935), (4355, 415369), (10385, 174187), (13399, 135005), (27001, 66995)]