28812680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{827}}^1$

素因数の和:918

約数の個数: 64

約数和(自身を含む): 70943040

約数和(自身を除く): 42130360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 520, 536, 670, 827, 871, 1340, 1654, 1742, 2680, 3308, 3484, 4135, 4355, 6616, 6968, 8270, 8710, 10751, 16540, 17420, 21502, 33080, 34840, 43004, 53755, 55409, 86008, 107510, 110818, 215020, 221636, 277045, 430040, 443272, 554090, 720317, 1108180, 1440634, 2216360, 2881268, 3601585, 5762536, 7203170, 14406340, 28812680]

約数ペア:

[(1, 28812680), (2, 14406340), (4, 7203170), (5, 5762536), (8, 3601585), (10, 2881268), (13, 2216360), (20, 1440634), (26, 1108180), (40, 720317), (52, 554090), (65, 443272), (67, 430040), (104, 277045), (130, 221636), (134, 215020), (260, 110818), (268, 107510), (335, 86008), (520, 55409), (536, 53755), (670, 43004), (827, 34840), (871, 33080), (1340, 21502), (1654, 17420), (1742, 16540), (2680, 10751), (3308, 8710), (3484, 8270), (4135, 6968), (4355, 6616)]