19666520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{229}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 47196000

約数和(自身を除く): 27529480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 113, 152, 190, 226, 229, 380, 452, 458, 565, 760, 904, 916, 1130, 1145, 1832, 2147, 2260, 2290, 4294, 4351, 4520, 4580, 8588, 8702, 9160, 10735, 17176, 17404, 21470, 21755, 25877, 34808, 42940, 43510, 51754, 85880, 87020, 103508, 129385, 174040, 207016, 258770, 491663, 517540, 983326, 1035080, 1966652, 2458315, 3933304, 4916630, 9833260, 19666520]

約数ペア:

[(1, 19666520), (2, 9833260), (4, 4916630), (5, 3933304), (8, 2458315), (10, 1966652), (19, 1035080), (20, 983326), (38, 517540), (40, 491663), (76, 258770), (95, 207016), (113, 174040), (152, 129385), (190, 103508), (226, 87020), (229, 85880), (380, 51754), (452, 43510), (458, 42940), (565, 34808), (760, 25877), (904, 21755), (916, 21470), (1130, 17404), (1145, 17176), (1832, 10735), (2147, 9160), (2260, 8702), (2290, 8588), (4294, 4580), (4351, 4520)]