20312390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 43711488

約数和(自身を除く): 23399098

約数列:

[1, 2, 5, 7, 10, 14, 35, 61, 67, 70, 71, 122, 134, 142, 305, 335, 355, 427, 469, 497, 610, 670, 710, 854, 938, 994, 2135, 2345, 2485, 4087, 4270, 4331, 4690, 4757, 4970, 8174, 8662, 9514, 20435, 21655, 23785, 28609, 30317, 33299, 40870, 43310, 47570, 57218, 60634, 66598, 143045, 151585, 166495, 286090, 290177, 303170, 332990, 580354, 1450885, 2031239, 2901770, 4062478, 10156195, 20312390]

約数ペア:

[(1, 20312390), (2, 10156195), (5, 4062478), (7, 2901770), (10, 2031239), (14, 1450885), (35, 580354), (61, 332990), (67, 303170), (70, 290177), (71, 286090), (122, 166495), (134, 151585), (142, 143045), (305, 66598), (335, 60634), (355, 57218), (427, 47570), (469, 43310), (497, 40870), (610, 33299), (670, 30317), (710, 28609), (854, 23785), (938, 21655), (994, 20435), (2135, 9514), (2345, 8662), (2485, 8174), (4087, 4970), (4270, 4757), (4331, 4690)]