15911220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20399}}^1$

素因数の和:20424

約数の個数: 48

約数和(自身を含む): 47980800

約数和(自身を除く): 32069580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 20399, 40798, 61197, 81596, 101995, 122394, 203990, 244788, 265187, 305985, 407980, 530374, 611970, 795561, 1060748, 1223940, 1325935, 1591122, 2651870, 3182244, 3977805, 5303740, 7955610, 15911220]

約数ペア:

[(1, 15911220), (2, 7955610), (3, 5303740), (4, 3977805), (5, 3182244), (6, 2651870), (10, 1591122), (12, 1325935), (13, 1223940), (15, 1060748), (20, 795561), (26, 611970), (30, 530374), (39, 407980), (52, 305985), (60, 265187), (65, 244788), (78, 203990), (130, 122394), (156, 101995), (195, 81596), (260, 61197), (390, 40798), (780, 20399)]