21150260

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25793}}^1$

素因数の和:25843

約数の個数: 24

約数和(自身を含む): 45500616

約数和(自身を除く): 24350356

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25793, 51586, 103172, 128965, 257930, 515860, 1057513, 2115026, 4230052, 5287565, 10575130, 21150260]

約数ペア:

[(1, 21150260), (2, 10575130), (4, 5287565), (5, 4230052), (10, 2115026), (20, 1057513), (41, 515860), (82, 257930), (164, 128965), (205, 103172), (410, 51586), (820, 25793)]