21722420

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{8291}}^1$

素因数の和:8431

約数の個数: 24

約数和(自身を含む): 45970848

約数和(自身を除く): 24248428

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 8291, 16582, 33164, 41455, 82910, 165820, 1086121, 2172242, 4344484, 5430605, 10861210, 21722420]

約数ペア:

[(1, 21722420), (2, 10861210), (4, 5430605), (5, 4344484), (10, 2172242), (20, 1086121), (131, 165820), (262, 82910), (524, 41455), (655, 33164), (1310, 16582), (2620, 8291)]