290456740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{29221}}^1$

素因数の和:29308

約数の個数: 48

約数和(自身を含む): 706938624

約数和(自身を除く): 416481884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 29221, 58442, 116884, 146105, 204547, 292210, 409094, 584420, 818188, 1022735, 2045470, 2074691, 4090940, 4149382, 8298764, 10373455, 14522837, 20746910, 29045674, 41493820, 58091348, 72614185, 145228370, 290456740]

約数ペア:

[(1, 290456740), (2, 145228370), (4, 72614185), (5, 58091348), (7, 41493820), (10, 29045674), (14, 20746910), (20, 14522837), (28, 10373455), (35, 8298764), (70, 4149382), (71, 4090940), (140, 2074691), (142, 2045470), (284, 1022735), (355, 818188), (497, 584420), (710, 409094), (994, 292210), (1420, 204547), (1988, 146105), (2485, 116884), (4970, 58442), (9940, 29221)]