18109640

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2617}}^1$

素因数の和:2801

約数の個数: 32

約数和(自身を含む): 40997880

約数和(自身を除く): 22888240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2617, 3460, 5234, 6920, 10468, 13085, 20936, 26170, 52340, 104680, 452741, 905482, 1810964, 2263705, 3621928, 4527410, 9054820, 18109640]

約数ペア:

[(1, 18109640), (2, 9054820), (4, 4527410), (5, 3621928), (8, 2263705), (10, 1810964), (20, 905482), (40, 452741), (173, 104680), (346, 52340), (692, 26170), (865, 20936), (1384, 13085), (1730, 10468), (2617, 6920), (3460, 5234)]