21659768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{12251}}^1$

素因数の和:12287

約数の個数: 32

約数和(自身を含む): 46312560

約数和(自身を除く): 24652792

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 12251, 24502, 49004, 98008, 159263, 208267, 318526, 416534, 637052, 833068, 1274104, 1666136, 2707471, 5414942, 10829884, 21659768]

約数ペア:

[(1, 21659768), (2, 10829884), (4, 5414942), (8, 2707471), (13, 1666136), (17, 1274104), (26, 833068), (34, 637052), (52, 416534), (68, 318526), (104, 208267), (136, 159263), (221, 98008), (442, 49004), (884, 24502), (1768, 12251)]