20481700

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6607}}^1$

素因数の和:6652

約数の個数: 36

約数和(自身を含む): 45885952

約数和(自身を除く): 25404252

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6607, 13214, 26428, 33035, 66070, 132140, 165175, 204817, 330350, 409634, 660700, 819268, 1024085, 2048170, 4096340, 5120425, 10240850, 20481700]

約数ペア:

[(1, 20481700), (2, 10240850), (4, 5120425), (5, 4096340), (10, 2048170), (20, 1024085), (25, 819268), (31, 660700), (50, 409634), (62, 330350), (100, 204817), (124, 165175), (155, 132140), (310, 66070), (620, 33035), (775, 26428), (1550, 13214), (3100, 6607)]