81939420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{455219}}^1$

素因数の和:455234

約数の個数: 36

約数和(自身を含む): 248550120

約数和(自身を除く): 166610700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 455219, 910438, 1365657, 1820876, 2276095, 2731314, 4096971, 4552190, 5462628, 6828285, 8193942, 9104380, 13656570, 16387884, 20484855, 27313140, 40969710, 81939420]

約数ペア:

[(1, 81939420), (2, 40969710), (3, 27313140), (4, 20484855), (5, 16387884), (6, 13656570), (9, 9104380), (10, 8193942), (12, 6828285), (15, 5462628), (18, 4552190), (20, 4096971), (30, 2731314), (36, 2276095), (45, 1820876), (60, 1365657), (90, 910438), (180, 455219)]