249140720

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^2\times {\mathrm{499}}^1$

素因数の和:670

約数の個数: 60

約数和(自身を含む): 587853000

約数和(自身を除く): 338712280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 499, 632, 790, 998, 1264, 1580, 1996, 2495, 3160, 3992, 4990, 6241, 6320, 7984, 9980, 12482, 19960, 24964, 31205, 39421, 39920, 49928, 62410, 78842, 99856, 124820, 157684, 197105, 249640, 315368, 394210, 499280, 630736, 788420, 1576840, 3114259, 3153680, 6228518, 12457036, 15571295, 24914072, 31142590, 49828144, 62285180, 124570360, 249140720]

約数ペア:

[(1, 249140720), (2, 124570360), (4, 62285180), (5, 49828144), (8, 31142590), (10, 24914072), (16, 15571295), (20, 12457036), (40, 6228518), (79, 3153680), (80, 3114259), (158, 1576840), (316, 788420), (395, 630736), (499, 499280), (632, 394210), (790, 315368), (998, 249640), (1264, 197105), (1580, 157684), (1996, 124820), (2495, 99856), (3160, 78842), (3992, 62410), (4990, 49928), (6241, 39920), (6320, 39421), (7984, 31205), (9980, 24964), (12482, 19960)]