21657412

素因数分解:

$2^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2351}}^1$

素因数の和:2416

約数の個数: 36

約数和(自身を含む): 45045504

約数和(自身を除く): 23388092

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 94, 98, 188, 196, 329, 658, 1316, 2303, 2351, 4606, 4702, 9212, 9404, 16457, 32914, 65828, 110497, 115199, 220994, 230398, 441988, 460796, 773479, 1546958, 3093916, 5414353, 10828706, 21657412]

約数ペア:

[(1, 21657412), (2, 10828706), (4, 5414353), (7, 3093916), (14, 1546958), (28, 773479), (47, 460796), (49, 441988), (94, 230398), (98, 220994), (188, 115199), (196, 110497), (329, 65828), (658, 32914), (1316, 16457), (2303, 9404), (2351, 9212), (4606, 4702)]