390535120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{256931}}^1$

素因数の和:256963

約数の個数: 40

約数和(自身を含む): 955787040

約数和(自身を除く): 565251920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 256931, 513862, 1027724, 1284655, 2055448, 2569310, 4110896, 4881689, 5138620, 9763378, 10277240, 19526756, 20554480, 24408445, 39053512, 48816890, 78107024, 97633780, 195267560, 390535120]

約数ペア:

[(1, 390535120), (2, 195267560), (4, 97633780), (5, 78107024), (8, 48816890), (10, 39053512), (16, 24408445), (19, 20554480), (20, 19526756), (38, 10277240), (40, 9763378), (76, 5138620), (80, 4881689), (95, 4110896), (152, 2569310), (190, 2055448), (304, 1284655), (380, 1027724), (760, 513862), (1520, 256931)]