20215312

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5717}}^1$

素因数の和:5755

約数の個数: 40

約数和(自身を含む): 44669016

約数和(自身を除く): 24453704

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5717, 11434, 22868, 45736, 74321, 91472, 97189, 148642, 194378, 297284, 388756, 594568, 777512, 1189136, 1263457, 1555024, 2526914, 5053828, 10107656, 20215312]

約数ペア:

[(1, 20215312), (2, 10107656), (4, 5053828), (8, 2526914), (13, 1555024), (16, 1263457), (17, 1189136), (26, 777512), (34, 594568), (52, 388756), (68, 297284), (104, 194378), (136, 148642), (208, 97189), (221, 91472), (272, 74321), (442, 45736), (884, 22868), (1768, 11434), (3536, 5717)]