15421220

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{4457}}^1$

素因数の和:4639

約数の個数: 24

約数和(自身を含む): 32579064

約数和(自身を除く): 17157844

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 4457, 8914, 17828, 22285, 44570, 89140, 771061, 1542122, 3084244, 3855305, 7710610, 15421220]

約数ペア:

[(1, 15421220), (2, 7710610), (4, 3855305), (5, 3084244), (10, 1542122), (20, 771061), (173, 89140), (346, 44570), (692, 22285), (865, 17828), (1730, 8914), (3460, 4457)]