639523560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409951}}^1$

素因数の和:409978

約数の個数: 64

約数和(自身を含む): 2066158080

約数和(自身を除く): 1426634520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 409951, 819902, 1229853, 1639804, 2049755, 2459706, 3279608, 4099510, 4919412, 5329363, 6149265, 8199020, 9838824, 10658726, 12298530, 15988089, 16398040, 21317452, 24597060, 26646815, 31976178, 42634904, 49194120, 53293630, 63952356, 79940445, 106587260, 127904712, 159880890, 213174520, 319761780, 639523560]

約数ペア:

[(1, 639523560), (2, 319761780), (3, 213174520), (4, 159880890), (5, 127904712), (6, 106587260), (8, 79940445), (10, 63952356), (12, 53293630), (13, 49194120), (15, 42634904), (20, 31976178), (24, 26646815), (26, 24597060), (30, 21317452), (39, 16398040), (40, 15988089), (52, 12298530), (60, 10658726), (65, 9838824), (78, 8199020), (104, 6149265), (120, 5329363), (130, 4919412), (156, 4099510), (195, 3279608), (260, 2459706), (312, 2049755), (390, 1639804), (520, 1229853), (780, 819902), (1560, 409951)]