31249980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1249}}^1$

素因数の和:1403

約数の個数: 72

約数和(自身を含む): 95550000

約数和(自身を除く): 64300020

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, 1249, 1251, 1390, 1668, 2085, 2498, 2502, 2780, 3747, 4170, 4996, 5004, 6245, 6255, 7494, 8340, 11241, 12490, 12510, 14988, 18735, 22482, 24980, 25020, 37470, 44964, 56205, 74940, 112410, 173611, 224820, 347222, 520833, 694444, 868055, 1041666, 1562499, 1736110, 2083332, 2604165, 3124998, 3472220, 5208330, 6249996, 7812495, 10416660, 15624990, 31249980]

約数ペア:

[(1, 31249980), (2, 15624990), (3, 10416660), (4, 7812495), (5, 6249996), (6, 5208330), (9, 3472220), (10, 3124998), (12, 2604165), (15, 2083332), (18, 1736110), (20, 1562499), (30, 1041666), (36, 868055), (45, 694444), (60, 520833), (90, 347222), (139, 224820), (180, 173611), (278, 112410), (417, 74940), (556, 56205), (695, 44964), (834, 37470), (1249, 25020), (1251, 24980), (1390, 22482), (1668, 18735), (2085, 14988), (2498, 12510), (2502, 12490), (2780, 11241), (3747, 8340), (4170, 7494), (4996, 6255), (5004, 6245)]