31510820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{449}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 75411000

約数和(自身を除く): 43900180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 121, 145, 220, 242, 290, 319, 449, 484, 580, 605, 638, 898, 1210, 1276, 1595, 1796, 2245, 2420, 3190, 3509, 4490, 4939, 6380, 7018, 8980, 9878, 13021, 14036, 17545, 19756, 24695, 26042, 35090, 49390, 52084, 54329, 65105, 70180, 98780, 108658, 130210, 143231, 217316, 260420, 271645, 286462, 543290, 572924, 716155, 1086580, 1432310, 1575541, 2864620, 3151082, 6302164, 7877705, 15755410, 31510820]

約数ペア:

[(1, 31510820), (2, 15755410), (4, 7877705), (5, 6302164), (10, 3151082), (11, 2864620), (20, 1575541), (22, 1432310), (29, 1086580), (44, 716155), (55, 572924), (58, 543290), (110, 286462), (116, 271645), (121, 260420), (145, 217316), (220, 143231), (242, 130210), (290, 108658), (319, 98780), (449, 70180), (484, 65105), (580, 54329), (605, 52084), (638, 49390), (898, 35090), (1210, 26042), (1276, 24695), (1595, 19756), (1796, 17545), (2245, 14036), (2420, 13021), (3190, 9878), (3509, 8980), (4490, 7018), (4939, 6380)]