51891320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1367}}^1$

素因数の和:1464

約数の個数: 64

約数和(自身を含む): 127552320

約数和(自身を除く): 75661000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 260, 292, 365, 520, 584, 730, 949, 1367, 1460, 1898, 2734, 2920, 3796, 4745, 5468, 6835, 7592, 9490, 10936, 13670, 17771, 18980, 27340, 35542, 37960, 54680, 71084, 88855, 99791, 142168, 177710, 199582, 355420, 399164, 498955, 710840, 798328, 997910, 1297283, 1995820, 2594566, 3991640, 5189132, 6486415, 10378264, 12972830, 25945660, 51891320]

約数ペア:

[(1, 51891320), (2, 25945660), (4, 12972830), (5, 10378264), (8, 6486415), (10, 5189132), (13, 3991640), (20, 2594566), (26, 1995820), (40, 1297283), (52, 997910), (65, 798328), (73, 710840), (104, 498955), (130, 399164), (146, 355420), (260, 199582), (292, 177710), (365, 142168), (520, 99791), (584, 88855), (730, 71084), (949, 54680), (1367, 37960), (1460, 35542), (1898, 27340), (2734, 18980), (2920, 17771), (3796, 13670), (4745, 10936), (5468, 9490), (6835, 7592)]