28917500

素因数分解:

$2^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:336

約数の個数: 60

約数和(自身を含む): 64947960

約数和(自身を除く): 36030460

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 269, 430, 500, 538, 625, 860, 1075, 1076, 1250, 1345, 2150, 2500, 2690, 4300, 5375, 5380, 6725, 10750, 11567, 13450, 21500, 23134, 26875, 26900, 33625, 46268, 53750, 57835, 67250, 107500, 115670, 134500, 168125, 231340, 289175, 336250, 578350, 672500, 1156700, 1445875, 2891750, 5783500, 7229375, 14458750, 28917500]

約数ペア:

[(1, 28917500), (2, 14458750), (4, 7229375), (5, 5783500), (10, 2891750), (20, 1445875), (25, 1156700), (43, 672500), (50, 578350), (86, 336250), (100, 289175), (125, 231340), (172, 168125), (215, 134500), (250, 115670), (269, 107500), (430, 67250), (500, 57835), (538, 53750), (625, 46268), (860, 33625), (1075, 26900), (1076, 26875), (1250, 23134), (1345, 21500), (2150, 13450), (2500, 11567), (2690, 10750), (4300, 6725), (5375, 5380)]