19857780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110321}}^1$

素因数の和:110336

約数の個数: 36

約数和(自身を含む): 60235812

約数和(自身を除く): 40378032

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110321, 220642, 330963, 441284, 551605, 661926, 992889, 1103210, 1323852, 1654815, 1985778, 2206420, 3309630, 3971556, 4964445, 6619260, 9928890, 19857780]

約数ペア:

[(1, 19857780), (2, 9928890), (3, 6619260), (4, 4964445), (5, 3971556), (6, 3309630), (9, 2206420), (10, 1985778), (12, 1654815), (15, 1323852), (18, 1103210), (20, 992889), (30, 661926), (36, 551605), (45, 441284), (60, 330963), (90, 220642), (180, 110321)]