20864060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2099}}^1$

素因数の和:2186

約数の個数: 48

約数和(自身を含む): 50803200

約数和(自身を除く): 29939140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2099, 2485, 4198, 4970, 8396, 9940, 10495, 14693, 20990, 29386, 41980, 58772, 73465, 146930, 149029, 293860, 298058, 596116, 745145, 1043203, 1490290, 2086406, 2980580, 4172812, 5216015, 10432030, 20864060]

約数ペア:

[(1, 20864060), (2, 10432030), (4, 5216015), (5, 4172812), (7, 2980580), (10, 2086406), (14, 1490290), (20, 1043203), (28, 745145), (35, 596116), (70, 298058), (71, 293860), (140, 149029), (142, 146930), (284, 73465), (355, 58772), (497, 41980), (710, 29386), (994, 20990), (1420, 14693), (1988, 10495), (2099, 9940), (2485, 8396), (4198, 4970)]