21246256

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1487}}^1$

素因数の和:1561

約数の個数: 40

約数和(自身を含む): 44282880

約数和(自身を除く): 23036624

約数列:

[1, 2, 4, 8, 16, 19, 38, 47, 76, 94, 152, 188, 304, 376, 752, 893, 1487, 1786, 2974, 3572, 5948, 7144, 11896, 14288, 23792, 28253, 56506, 69889, 113012, 139778, 226024, 279556, 452048, 559112, 1118224, 1327891, 2655782, 5311564, 10623128, 21246256]

約数ペア:

[(1, 21246256), (2, 10623128), (4, 5311564), (8, 2655782), (16, 1327891), (19, 1118224), (38, 559112), (47, 452048), (76, 279556), (94, 226024), (152, 139778), (188, 113012), (304, 69889), (376, 56506), (752, 28253), (893, 23792), (1487, 14288), (1786, 11896), (2974, 7144), (3572, 5948)]