20547680

素因数分解:

$2^5\times 5^1\times {\mathrm{167}}^1\times {\mathrm{769}}^1$

素因数の和:951

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 28350400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 167, 334, 668, 769, 835, 1336, 1538, 1670, 2672, 3076, 3340, 3845, 5344, 6152, 6680, 7690, 12304, 13360, 15380, 24608, 26720, 30760, 61520, 123040, 128423, 256846, 513692, 642115, 1027384, 1284230, 2054768, 2568460, 4109536, 5136920, 10273840, 20547680]

約数ペア:

[(1, 20547680), (2, 10273840), (4, 5136920), (5, 4109536), (8, 2568460), (10, 2054768), (16, 1284230), (20, 1027384), (32, 642115), (40, 513692), (80, 256846), (160, 128423), (167, 123040), (334, 61520), (668, 30760), (769, 26720), (835, 24608), (1336, 15380), (1538, 13360), (1670, 12304), (2672, 7690), (3076, 6680), (3340, 6152), (3845, 5344)]