20195240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{547}}^1$

素因数の和:642

約数の個数: 64

約数和(自身を含む): 49714560

約数和(自身を除く): 29519320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 71, 104, 130, 142, 260, 284, 355, 520, 547, 568, 710, 923, 1094, 1420, 1846, 2188, 2735, 2840, 3692, 4376, 4615, 5470, 7111, 7384, 9230, 10940, 14222, 18460, 21880, 28444, 35555, 36920, 38837, 56888, 71110, 77674, 142220, 155348, 194185, 284440, 310696, 388370, 504881, 776740, 1009762, 1553480, 2019524, 2524405, 4039048, 5048810, 10097620, 20195240]

約数ペア:

[(1, 20195240), (2, 10097620), (4, 5048810), (5, 4039048), (8, 2524405), (10, 2019524), (13, 1553480), (20, 1009762), (26, 776740), (40, 504881), (52, 388370), (65, 310696), (71, 284440), (104, 194185), (130, 155348), (142, 142220), (260, 77674), (284, 71110), (355, 56888), (520, 38837), (547, 36920), (568, 35555), (710, 28444), (923, 21880), (1094, 18460), (1420, 14222), (1846, 10940), (2188, 9230), (2735, 7384), (2840, 7111), (3692, 5470), (4376, 4615)]