68779980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2749}}^1$

素因数の和:2903

約数の個数: 72

約数和(自身を含む): 210210000

約数和(自身を除く): 141430020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 834, 1251, 1390, 1668, 2085, 2502, 2749, 2780, 4170, 5004, 5498, 6255, 8247, 8340, 10996, 12510, 13745, 16494, 24741, 25020, 27490, 32988, 41235, 49482, 54980, 82470, 98964, 123705, 164940, 247410, 382111, 494820, 764222, 1146333, 1528444, 1910555, 2292666, 3438999, 3821110, 4585332, 5731665, 6877998, 7642220, 11463330, 13755996, 17194995, 22926660, 34389990, 68779980]

約数ペア:

[(1, 68779980), (2, 34389990), (3, 22926660), (4, 17194995), (5, 13755996), (6, 11463330), (9, 7642220), (10, 6877998), (12, 5731665), (15, 4585332), (18, 3821110), (20, 3438999), (30, 2292666), (36, 1910555), (45, 1528444), (60, 1146333), (90, 764222), (139, 494820), (180, 382111), (278, 247410), (417, 164940), (556, 123705), (695, 98964), (834, 82470), (1251, 54980), (1390, 49482), (1668, 41235), (2085, 32988), (2502, 27490), (2749, 25020), (2780, 24741), (4170, 16494), (5004, 13745), (5498, 12510), (6255, 10996), (8247, 8340)]