21861544

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{617}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 42419520

約数和(自身を除く): 20557976

約数列:

[1, 2, 4, 8, 43, 86, 103, 172, 206, 344, 412, 617, 824, 1234, 2468, 4429, 4936, 8858, 17716, 26531, 35432, 53062, 63551, 106124, 127102, 212248, 254204, 508408, 2732693, 5465386, 10930772, 21861544]

約数ペア:

[(1, 21861544), (2, 10930772), (4, 5465386), (8, 2732693), (43, 508408), (86, 254204), (103, 212248), (172, 127102), (206, 106124), (344, 63551), (412, 53062), (617, 35432), (824, 26531), (1234, 17716), (2468, 8858), (4429, 4936)]