31806840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20389}}^1$

素因数の和:20416

約数の個数: 64

約数和(自身を含む): 102765600

約数和(自身を除く): 70958760

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, 20389, 40778, 61167, 81556, 101945, 122334, 163112, 203890, 244668, 265057, 305835, 407780, 489336, 530114, 611670, 795171, 815560, 1060228, 1223340, 1325285, 1590342, 2120456, 2446680, 2650570, 3180684, 3975855, 5301140, 6361368, 7951710, 10602280, 15903420, 31806840]

約数ペア:

[(1, 31806840), (2, 15903420), (3, 10602280), (4, 7951710), (5, 6361368), (6, 5301140), (8, 3975855), (10, 3180684), (12, 2650570), (13, 2446680), (15, 2120456), (20, 1590342), (24, 1325285), (26, 1223340), (30, 1060228), (39, 815560), (40, 795171), (52, 611670), (60, 530114), (65, 489336), (78, 407780), (104, 305835), (120, 265057), (130, 244668), (156, 203890), (195, 163112), (260, 122334), (312, 101945), (390, 81556), (520, 61167), (780, 40778), (1560, 20389)]