21681780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{361363}}^1$

素因数の和:361375

約数の個数: 24

約数和(自身を含む): 60709152

約数和(自身を除く): 39027372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 361363, 722726, 1084089, 1445452, 1806815, 2168178, 3613630, 4336356, 5420445, 7227260, 10840890, 21681780]

約数ペア:

[(1, 21681780), (2, 10840890), (3, 7227260), (4, 5420445), (5, 4336356), (6, 3613630), (10, 2168178), (12, 1806815), (15, 1445452), (20, 1084089), (30, 722726), (60, 361363)]