19538140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23827}}^1$

素因数の和:23877

約数の個数: 24

約数和(自身を含む): 42032592

約数和(自身を除く): 22494452

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 23827, 47654, 95308, 119135, 238270, 476540, 976907, 1953814, 3907628, 4884535, 9769070, 19538140]

約数ペア:

[(1, 19538140), (2, 9769070), (4, 4884535), (5, 3907628), (10, 1953814), (20, 976907), (41, 476540), (82, 238270), (164, 119135), (205, 95308), (410, 47654), (820, 23827)]