12901220

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{2699}}^1$

素因数の和:2947

約数の個数: 24

約数和(自身を含む): 27216000

約数和(自身を除く): 14314780

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 2699, 4780, 5398, 10796, 13495, 26990, 53980, 645061, 1290122, 2580244, 3225305, 6450610, 12901220]

約数ペア:

[(1, 12901220), (2, 6450610), (4, 3225305), (5, 2580244), (10, 1290122), (20, 645061), (239, 53980), (478, 26990), (956, 13495), (1195, 10796), (2390, 5398), (2699, 4780)]