21261611

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 27319680

約数和(自身を除く): 6058069

約数列:

[1, 7, 17, 29, 61, 101, 119, 203, 427, 493, 707, 1037, 1717, 1769, 2929, 3451, 6161, 7259, 12019, 12383, 20503, 30073, 43127, 49793, 104737, 178669, 210511, 348551, 733159, 1250683, 3037373, 21261611]

約数ペア:

[(1, 21261611), (7, 3037373), (17, 1250683), (29, 733159), (61, 348551), (101, 210511), (119, 178669), (203, 104737), (427, 49793), (493, 43127), (707, 30073), (1037, 20503), (1717, 12383), (1769, 12019), (2929, 7259), (3451, 6161)]