21284428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{2131}}^1$

素因数の和:2373

約数の個数: 24

約数和(自身を含む): 40832064

約数和(自身を除く): 19547636

約数列:

[1, 2, 4, 11, 22, 44, 227, 454, 908, 2131, 2497, 4262, 4994, 8524, 9988, 23441, 46882, 93764, 483737, 967474, 1934948, 5321107, 10642214, 21284428]

約数ペア:

[(1, 21284428), (2, 10642214), (4, 5321107), (11, 1934948), (22, 967474), (44, 483737), (227, 93764), (454, 46882), (908, 23441), (2131, 9988), (2497, 8524), (4262, 4994)]