780876760

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{191}}^1\times {\mathrm{571}}^1$

素因数の和:952

約数の個数: 64

約数和(自身を含む): 1779148800

約数和(自身を除く): 998272040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 191, 358, 382, 571, 716, 764, 895, 955, 1142, 1432, 1528, 1790, 1910, 2284, 2855, 3580, 3820, 4568, 5710, 7160, 7640, 11420, 22840, 34189, 68378, 102209, 109061, 136756, 170945, 204418, 218122, 273512, 341890, 408836, 436244, 511045, 545305, 683780, 817672, 872488, 1022090, 1090610, 1367560, 2044180, 2181220, 4088360, 4362440, 19521919, 39043838, 78087676, 97609595, 156175352, 195219190, 390438380, 780876760]

約数ペア:

[(1, 780876760), (2, 390438380), (4, 195219190), (5, 156175352), (8, 97609595), (10, 78087676), (20, 39043838), (40, 19521919), (179, 4362440), (191, 4088360), (358, 2181220), (382, 2044180), (571, 1367560), (716, 1090610), (764, 1022090), (895, 872488), (955, 817672), (1142, 683780), (1432, 545305), (1528, 511045), (1790, 436244), (1910, 408836), (2284, 341890), (2855, 273512), (3580, 218122), (3820, 204418), (4568, 170945), (5710, 136756), (7160, 109061), (7640, 102209), (11420, 68378), (22840, 34189)]