278519240

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{1663}}^1$

素因数の和:1806

約数の個数: 64

約数和(自身を含む): 646963200

約数和(自身を除く): 368443960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 79, 106, 158, 212, 265, 316, 395, 424, 530, 632, 790, 1060, 1580, 1663, 2120, 3160, 3326, 4187, 6652, 8315, 8374, 13304, 16630, 16748, 20935, 33260, 33496, 41870, 66520, 83740, 88139, 131377, 167480, 176278, 262754, 352556, 440695, 525508, 656885, 705112, 881390, 1051016, 1313770, 1762780, 2627540, 3525560, 5255080, 6962981, 13925962, 27851924, 34814905, 55703848, 69629810, 139259620, 278519240]

約数ペア:

[(1, 278519240), (2, 139259620), (4, 69629810), (5, 55703848), (8, 34814905), (10, 27851924), (20, 13925962), (40, 6962981), (53, 5255080), (79, 3525560), (106, 2627540), (158, 1762780), (212, 1313770), (265, 1051016), (316, 881390), (395, 705112), (424, 656885), (530, 525508), (632, 440695), (790, 352556), (1060, 262754), (1580, 176278), (1663, 167480), (2120, 131377), (3160, 88139), (3326, 83740), (4187, 66520), (6652, 41870), (8315, 33496), (8374, 33260), (13304, 20935), (16630, 16748)]