20145540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4729}}^1$

素因数の和:4812

約数の個数: 48

約数和(自身を含む): 57214080

約数和(自身を除く): 37068540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4729, 9458, 14187, 18916, 23645, 28374, 47290, 56748, 70935, 94580, 141870, 283740, 335759, 671518, 1007277, 1343036, 1678795, 2014554, 3357590, 4029108, 5036385, 6715180, 10072770, 20145540]

約数ペア:

[(1, 20145540), (2, 10072770), (3, 6715180), (4, 5036385), (5, 4029108), (6, 3357590), (10, 2014554), (12, 1678795), (15, 1343036), (20, 1007277), (30, 671518), (60, 335759), (71, 283740), (142, 141870), (213, 94580), (284, 70935), (355, 56748), (426, 47290), (710, 28374), (852, 23645), (1065, 18916), (1420, 14187), (2130, 9458), (4260, 4729)]