78960980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{4441}}^1$

素因数の和:4584

約数の個数: 48

約数和(自身を含む): 191041536

約数和(自身を除く): 112080556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 127, 140, 254, 508, 635, 889, 1270, 1778, 2540, 3556, 4441, 4445, 8882, 8890, 17764, 17780, 22205, 31087, 44410, 62174, 88820, 124348, 155435, 310870, 564007, 621740, 1128014, 2256028, 2820035, 3948049, 5640070, 7896098, 11280140, 15792196, 19740245, 39480490, 78960980]

約数ペア:

[(1, 78960980), (2, 39480490), (4, 19740245), (5, 15792196), (7, 11280140), (10, 7896098), (14, 5640070), (20, 3948049), (28, 2820035), (35, 2256028), (70, 1128014), (127, 621740), (140, 564007), (254, 310870), (508, 155435), (635, 124348), (889, 88820), (1270, 62174), (1778, 44410), (2540, 31087), (3556, 22205), (4441, 17780), (4445, 17764), (8882, 8890)]