21503108

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{1231}}^1$

素因数の和:1643

約数の個数: 24

約数和(自身を含む): 41188224

約数和(自身を除く): 19685116

約数列:

[1, 2, 4, 11, 22, 44, 397, 794, 1231, 1588, 2462, 4367, 4924, 8734, 13541, 17468, 27082, 54164, 488707, 977414, 1954828, 5375777, 10751554, 21503108]

約数ペア:

[(1, 21503108), (2, 10751554), (4, 5375777), (11, 1954828), (22, 977414), (44, 488707), (397, 54164), (794, 27082), (1231, 17468), (1588, 13541), (2462, 8734), (4367, 4924)]