21970916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 45299520

約数和(自身を除く): 23328604

約数列:

[1, 2, 4, 11, 19, 22, 38, 41, 44, 76, 82, 164, 209, 418, 451, 641, 779, 836, 902, 1282, 1558, 1804, 2564, 3116, 7051, 8569, 12179, 14102, 17138, 24358, 26281, 28204, 34276, 48716, 52562, 105124, 133969, 267938, 289091, 499339, 535876, 578182, 998678, 1156364, 1997356, 5492729, 10985458, 21970916]

約数ペア:

[(1, 21970916), (2, 10985458), (4, 5492729), (11, 1997356), (19, 1156364), (22, 998678), (38, 578182), (41, 535876), (44, 499339), (76, 289091), (82, 267938), (164, 133969), (209, 105124), (418, 52562), (451, 48716), (641, 34276), (779, 28204), (836, 26281), (902, 24358), (1282, 17138), (1558, 14102), (1804, 12179), (2564, 8569), (3116, 7051)]