391497850

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{4001}}^1$

素因数の和:4135

約数の個数: 48

約数和(自身を含む): 774146880

約数和(自身を除く): 382649030

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 103, 190, 206, 475, 515, 950, 1030, 1957, 2575, 3914, 4001, 5150, 8002, 9785, 19570, 20005, 40010, 48925, 76019, 97850, 100025, 152038, 200050, 380095, 412103, 760190, 824206, 1900475, 2060515, 3800950, 4121030, 7829957, 10302575, 15659914, 20605150, 39149785, 78299570, 195748925, 391497850]

約数ペア:

[(1, 391497850), (2, 195748925), (5, 78299570), (10, 39149785), (19, 20605150), (25, 15659914), (38, 10302575), (50, 7829957), (95, 4121030), (103, 3800950), (190, 2060515), (206, 1900475), (475, 824206), (515, 760190), (950, 412103), (1030, 380095), (1957, 200050), (2575, 152038), (3914, 100025), (4001, 97850), (5150, 76019), (8002, 48925), (9785, 40010), (19570, 20005)]