18634160

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1429}}^1$

素因数の和:1605

約数の個数: 40

約数和(自身を含む): 43620720

約数和(自身を除く): 24986560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1429, 1630, 2608, 2858, 3260, 5716, 6520, 7145, 11432, 13040, 14290, 22864, 28580, 57160, 114320, 232927, 465854, 931708, 1164635, 1863416, 2329270, 3726832, 4658540, 9317080, 18634160]

約数ペア:

[(1, 18634160), (2, 9317080), (4, 4658540), (5, 3726832), (8, 2329270), (10, 1863416), (16, 1164635), (20, 931708), (40, 465854), (80, 232927), (163, 114320), (326, 57160), (652, 28580), (815, 22864), (1304, 14290), (1429, 13040), (1630, 11432), (2608, 7145), (2858, 6520), (3260, 5716)]