21051700

素因数分解:

$2^2\times 5^2\times {\mathrm{131}}^1\times {\mathrm{1607}}^1$

素因数の和:1752

約数の個数: 36

約数和(自身を含む): 46059552

約数和(自身を除く): 25007852

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 131, 262, 524, 655, 1310, 1607, 2620, 3214, 3275, 6428, 6550, 8035, 13100, 16070, 32140, 40175, 80350, 160700, 210517, 421034, 842068, 1052585, 2105170, 4210340, 5262925, 10525850, 21051700]

約数ペア:

[(1, 21051700), (2, 10525850), (4, 5262925), (5, 4210340), (10, 2105170), (20, 1052585), (25, 842068), (50, 421034), (100, 210517), (131, 160700), (262, 80350), (524, 40175), (655, 32140), (1310, 16070), (1607, 13100), (2620, 8035), (3214, 6550), (3275, 6428)]