15221240

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{3923}}^1$

素因数の和:4031

約数の個数: 32

約数和(自身を含む): 34609680

約数和(自身を除く): 19388440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 3923, 7846, 15692, 19615, 31384, 39230, 78460, 156920, 380531, 761062, 1522124, 1902655, 3044248, 3805310, 7610620, 15221240]

約数ペア:

[(1, 15221240), (2, 7610620), (4, 3805310), (5, 3044248), (8, 1902655), (10, 1522124), (20, 761062), (40, 380531), (97, 156920), (194, 78460), (388, 39230), (485, 31384), (776, 19615), (970, 15692), (1940, 7846), (3880, 3923)]