20212220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2447}}^1$

素因数の和:2522

約数の個数: 48

約数和(自身を含む): 49351680

約数和(自身を除く): 29139460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 2447, 4130, 4894, 8260, 9788, 12235, 17129, 24470, 34258, 48940, 68516, 85645, 144373, 171290, 288746, 342580, 577492, 721865, 1010611, 1443730, 2021222, 2887460, 4042444, 5053055, 10106110, 20212220]

約数ペア:

[(1, 20212220), (2, 10106110), (4, 5053055), (5, 4042444), (7, 2887460), (10, 2021222), (14, 1443730), (20, 1010611), (28, 721865), (35, 577492), (59, 342580), (70, 288746), (118, 171290), (140, 144373), (236, 85645), (295, 68516), (413, 48940), (590, 34258), (826, 24470), (1180, 17129), (1652, 12235), (2065, 9788), (2447, 8260), (4130, 4894)]