21278170

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{307}}^1$

素因数の和:582

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 18638630

約数列:

[1, 2, 5, 10, 29, 58, 145, 239, 290, 307, 478, 614, 1195, 1535, 2390, 3070, 6931, 8903, 13862, 17806, 34655, 44515, 69310, 73373, 89030, 146746, 366865, 733730, 2127817, 4255634, 10639085, 21278170]

約数ペア:

[(1, 21278170), (2, 10639085), (5, 4255634), (10, 2127817), (29, 733730), (58, 366865), (145, 146746), (239, 89030), (290, 73373), (307, 69310), (478, 44515), (614, 34655), (1195, 17806), (1535, 13862), (2390, 8903), (3070, 6931)]