21578744

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{379}}^1\times {\mathrm{647}}^1$

素因数の和:1043

約数の個数: 32

約数和(自身を含む): 44323200

約数和(自身を除く): 22744456

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 379, 647, 758, 1294, 1516, 2588, 3032, 4169, 5176, 7117, 8338, 14234, 16676, 28468, 33352, 56936, 245213, 490426, 980852, 1961704, 2697343, 5394686, 10789372, 21578744]

約数ペア:

[(1, 21578744), (2, 10789372), (4, 5394686), (8, 2697343), (11, 1961704), (22, 980852), (44, 490426), (88, 245213), (379, 56936), (647, 33352), (758, 28468), (1294, 16676), (1516, 14234), (2588, 8338), (3032, 7117), (4169, 5176)]