1557660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1997}}^1$

素因数の和:2022

約数の個数: 48

約数和(自身を含む): 4699296

約数和(自身を除く): 3141636

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, 1997, 3994, 5991, 7988, 9985, 11982, 19970, 23964, 25961, 29955, 39940, 51922, 59910, 77883, 103844, 119820, 129805, 155766, 259610, 311532, 389415, 519220, 778830, 1557660]

約数ペア:

[(1, 1557660), (2, 778830), (3, 519220), (4, 389415), (5, 311532), (6, 259610), (10, 155766), (12, 129805), (13, 119820), (15, 103844), (20, 77883), (26, 59910), (30, 51922), (39, 39940), (52, 29955), (60, 25961), (65, 23964), (78, 19970), (130, 11982), (156, 9985), (195, 7988), (260, 5991), (390, 3994), (780, 1997)]