21098860

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{8053}}^1$

素因数の和:8193

約数の個数: 24

約数和(自身を含む): 44651376

約数和(自身を除く): 23552516

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 8053, 16106, 32212, 40265, 80530, 161060, 1054943, 2109886, 4219772, 5274715, 10549430, 21098860]

約数ペア:

[(1, 21098860), (2, 10549430), (4, 5274715), (5, 4219772), (10, 2109886), (20, 1054943), (131, 161060), (262, 80530), (524, 40265), (655, 32212), (1310, 16106), (2620, 8053)]