78137780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{32831}}^1$

素因数の和:32864

約数の個数: 48

約数和(自身を含む): 198567936

約数和(自身を除く): 120430156

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 32831, 65662, 131324, 164155, 229817, 328310, 459634, 558127, 656620, 919268, 1116254, 1149085, 2232508, 2298170, 2790635, 3906889, 4596340, 5581270, 7813778, 11162540, 15627556, 19534445, 39068890, 78137780]

約数ペア:

[(1, 78137780), (2, 39068890), (4, 19534445), (5, 15627556), (7, 11162540), (10, 7813778), (14, 5581270), (17, 4596340), (20, 3906889), (28, 2790635), (34, 2298170), (35, 2232508), (68, 1149085), (70, 1116254), (85, 919268), (119, 656620), (140, 558127), (170, 459634), (238, 328310), (340, 229817), (476, 164155), (595, 131324), (1190, 65662), (2380, 32831)]