30991440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{929}}^1$

素因数の和:1084

約数の個数: 80

約数和(自身を含む): 96868800

約数和(自身を除く): 65877360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 139, 240, 278, 417, 556, 695, 834, 929, 1112, 1390, 1668, 1858, 2085, 2224, 2780, 2787, 3336, 3716, 4170, 4645, 5560, 5574, 6672, 7432, 8340, 9290, 11120, 11148, 13935, 14864, 16680, 18580, 22296, 27870, 33360, 37160, 44592, 55740, 74320, 111480, 129131, 222960, 258262, 387393, 516524, 645655, 774786, 1033048, 1291310, 1549572, 1936965, 2066096, 2582620, 3099144, 3873930, 5165240, 6198288, 7747860, 10330480, 15495720, 30991440]

約数ペア:

[(1, 30991440), (2, 15495720), (3, 10330480), (4, 7747860), (5, 6198288), (6, 5165240), (8, 3873930), (10, 3099144), (12, 2582620), (15, 2066096), (16, 1936965), (20, 1549572), (24, 1291310), (30, 1033048), (40, 774786), (48, 645655), (60, 516524), (80, 387393), (120, 258262), (139, 222960), (240, 129131), (278, 111480), (417, 74320), (556, 55740), (695, 44592), (834, 37160), (929, 33360), (1112, 27870), (1390, 22296), (1668, 18580), (1858, 16680), (2085, 14864), (2224, 13935), (2780, 11148), (2787, 11120), (3336, 9290), (3716, 8340), (4170, 7432), (4645, 6672), (5560, 5574)]