18705180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23981}}^1$

素因数の和:24006

約数の個数: 48

約数和(自身を含む): 56405664

約数和(自身を除く): 37700484

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, 23981, 47962, 71943, 95924, 119905, 143886, 239810, 287772, 311753, 359715, 479620, 623506, 719430, 935259, 1247012, 1438860, 1558765, 1870518, 3117530, 3741036, 4676295, 6235060, 9352590, 18705180]

約数ペア:

[(1, 18705180), (2, 9352590), (3, 6235060), (4, 4676295), (5, 3741036), (6, 3117530), (10, 1870518), (12, 1558765), (13, 1438860), (15, 1247012), (20, 935259), (26, 719430), (30, 623506), (39, 479620), (52, 359715), (60, 311753), (65, 287772), (78, 239810), (130, 143886), (156, 119905), (195, 95924), (260, 71943), (390, 47962), (780, 23981)]