28982980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5867}}^1$

素因数の和:5908

約数の個数: 48

約数和(自身を含む): 69007680

約数和(自身を除く): 40024700

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 5867, 11734, 23468, 29335, 58670, 76271, 111473, 117340, 152542, 222946, 305084, 381355, 445892, 557365, 762710, 1114730, 1449149, 1525420, 2229460, 2898298, 5796596, 7245745, 14491490, 28982980]

約数ペア:

[(1, 28982980), (2, 14491490), (4, 7245745), (5, 5796596), (10, 2898298), (13, 2229460), (19, 1525420), (20, 1449149), (26, 1114730), (38, 762710), (52, 557365), (65, 445892), (76, 381355), (95, 305084), (130, 222946), (190, 152542), (247, 117340), (260, 111473), (380, 76271), (494, 58670), (988, 29335), (1235, 23468), (2470, 11734), (4940, 5867)]