1298960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1249}}^1$

素因数の和:1275

約数の個数: 40

約数和(自身を含む): 3255000

約数和(自身を除く): 1956040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1249, 2498, 4996, 6245, 9992, 12490, 16237, 19984, 24980, 32474, 49960, 64948, 81185, 99920, 129896, 162370, 259792, 324740, 649480, 1298960]

約数ペア:

[(1, 1298960), (2, 649480), (4, 324740), (5, 259792), (8, 162370), (10, 129896), (13, 99920), (16, 81185), (20, 64948), (26, 49960), (40, 32474), (52, 24980), (65, 19984), (80, 16237), (104, 12490), (130, 9992), (208, 6245), (260, 4996), (520, 2498), (1040, 1249)]