21263732

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 43959552

約数和(自身を除く): 22695820

約数列:

[1, 2, 4, 7, 14, 28, 73, 101, 103, 146, 202, 206, 292, 404, 412, 511, 707, 721, 1022, 1414, 1442, 2044, 2828, 2884, 7373, 7519, 10403, 14746, 15038, 20806, 29492, 30076, 41612, 51611, 52633, 72821, 103222, 105266, 145642, 206444, 210532, 291284, 759419, 1518838, 3037676, 5315933, 10631866, 21263732]

約数ペア:

[(1, 21263732), (2, 10631866), (4, 5315933), (7, 3037676), (14, 1518838), (28, 759419), (73, 291284), (101, 210532), (103, 206444), (146, 145642), (202, 105266), (206, 103222), (292, 72821), (404, 52633), (412, 51611), (511, 41612), (707, 30076), (721, 29492), (1022, 20806), (1414, 15038), (1442, 14746), (2044, 10403), (2828, 7519), (2884, 7373)]