20666300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 48174000

約数和(自身を除く): 27507700

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 73, 76, 95, 100, 146, 149, 190, 292, 298, 365, 380, 475, 596, 730, 745, 950, 1387, 1460, 1490, 1825, 1900, 2774, 2831, 2980, 3650, 3725, 5548, 5662, 6935, 7300, 7450, 10877, 11324, 13870, 14155, 14900, 21754, 27740, 28310, 34675, 43508, 54385, 56620, 69350, 70775, 108770, 138700, 141550, 206663, 217540, 271925, 283100, 413326, 543850, 826652, 1033315, 1087700, 2066630, 4133260, 5166575, 10333150, 20666300]

約数ペア:

[(1, 20666300), (2, 10333150), (4, 5166575), (5, 4133260), (10, 2066630), (19, 1087700), (20, 1033315), (25, 826652), (38, 543850), (50, 413326), (73, 283100), (76, 271925), (95, 217540), (100, 206663), (146, 141550), (149, 138700), (190, 108770), (292, 70775), (298, 69350), (365, 56620), (380, 54385), (475, 43508), (596, 34675), (730, 28310), (745, 27740), (950, 21754), (1387, 14900), (1460, 14155), (1490, 13870), (1825, 11324), (1900, 10877), (2774, 7450), (2831, 7300), (2980, 6935), (3650, 5662), (3725, 5548)]