9789680

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1549}}^1$

素因数の和:1641

約数の個数: 40

約数和(自身を含む): 23064000

約数和(自身を除く): 13274320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1549, 1580, 3098, 3160, 6196, 6320, 7745, 12392, 15490, 24784, 30980, 61960, 122371, 123920, 244742, 489484, 611855, 978968, 1223710, 1957936, 2447420, 4894840, 9789680]

約数ペア:

[(1, 9789680), (2, 4894840), (4, 2447420), (5, 1957936), (8, 1223710), (10, 978968), (16, 611855), (20, 489484), (40, 244742), (79, 123920), (80, 122371), (158, 61960), (316, 30980), (395, 24784), (632, 15490), (790, 12392), (1264, 7745), (1549, 6320), (1580, 6196), (3098, 3160)]