20916320

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4217}}^1$

素因数の和:4263

約数の個数: 48

約数和(自身を含む): 51020928

約数和(自身を除く): 30104608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4217, 4960, 8434, 16868, 21085, 33736, 42170, 67472, 84340, 130727, 134944, 168680, 261454, 337360, 522908, 653635, 674720, 1045816, 1307270, 2091632, 2614540, 4183264, 5229080, 10458160, 20916320]

約数ペア:

[(1, 20916320), (2, 10458160), (4, 5229080), (5, 4183264), (8, 2614540), (10, 2091632), (16, 1307270), (20, 1045816), (31, 674720), (32, 653635), (40, 522908), (62, 337360), (80, 261454), (124, 168680), (155, 134944), (160, 130727), (248, 84340), (310, 67472), (496, 42170), (620, 33736), (992, 21085), (1240, 16868), (2480, 8434), (4217, 4960)]