21729780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{120721}}^1$

素因数の和:120736

約数の個数: 36

約数和(自身を含む): 65914212

約数和(自身を除く): 44184432

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 120721, 241442, 362163, 482884, 603605, 724326, 1086489, 1207210, 1448652, 1810815, 2172978, 2414420, 3621630, 4345956, 5432445, 7243260, 10864890, 21729780]

約数ペア:

[(1, 21729780), (2, 10864890), (3, 7243260), (4, 5432445), (5, 4345956), (6, 3621630), (9, 2414420), (10, 2172978), (12, 1810815), (15, 1448652), (18, 1207210), (20, 1086489), (30, 724326), (36, 603605), (45, 482884), (60, 362163), (90, 241442), (180, 120721)]