21220306

素因数分解:

$2^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:726

約数の個数: 24

約数和(自身を含む): 34401024

約数和(自身を除く): 13180718

約数列:

[1, 2, 23, 31, 46, 62, 529, 647, 713, 1058, 1294, 1426, 14881, 16399, 20057, 29762, 32798, 40114, 342263, 461311, 684526, 922622, 10610153, 21220306]

約数ペア:

[(1, 21220306), (2, 10610153), (23, 922622), (31, 684526), (46, 461311), (62, 342263), (529, 40114), (647, 32798), (713, 29762), (1058, 20057), (1294, 16399), (1426, 14881)]