18785380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{739}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 41771520

約数和(自身を除く): 22986140

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 739, 820, 1271, 1478, 2542, 2956, 3695, 5084, 6355, 7390, 12710, 14780, 22909, 25420, 30299, 45818, 60598, 91636, 114545, 121196, 151495, 229090, 302990, 458180, 605980, 939269, 1878538, 3757076, 4696345, 9392690, 18785380]

約数ペア:

[(1, 18785380), (2, 9392690), (4, 4696345), (5, 3757076), (10, 1878538), (20, 939269), (31, 605980), (41, 458180), (62, 302990), (82, 229090), (124, 151495), (155, 121196), (164, 114545), (205, 91636), (310, 60598), (410, 45818), (620, 30299), (739, 25420), (820, 22909), (1271, 14780), (1478, 12710), (2542, 7390), (2956, 6355), (3695, 5084)]