20102680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{577}}^1$

素因数の和:668

約数の個数: 64

約数和(自身を含む): 49523040

約数和(自身を除く): 29420360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 520, 536, 577, 670, 871, 1154, 1340, 1742, 2308, 2680, 2885, 3484, 4355, 4616, 5770, 6968, 7501, 8710, 11540, 15002, 17420, 23080, 30004, 34840, 37505, 38659, 60008, 75010, 77318, 150020, 154636, 193295, 300040, 309272, 386590, 502567, 773180, 1005134, 1546360, 2010268, 2512835, 4020536, 5025670, 10051340, 20102680]

約数ペア:

[(1, 20102680), (2, 10051340), (4, 5025670), (5, 4020536), (8, 2512835), (10, 2010268), (13, 1546360), (20, 1005134), (26, 773180), (40, 502567), (52, 386590), (65, 309272), (67, 300040), (104, 193295), (130, 154636), (134, 150020), (260, 77318), (268, 75010), (335, 60008), (520, 38659), (536, 37505), (577, 34840), (670, 30004), (871, 23080), (1154, 17420), (1340, 15002), (1742, 11540), (2308, 8710), (2680, 7501), (2885, 6968), (3484, 5770), (4355, 4616)]