21257316

素因数分解:

$2^2\times 3^4\times {\mathrm{65609}}^1$

素因数の和:65625

約数の個数: 30

約数和(自身を含む): 55571670

約数和(自身を除く): 34314354

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324, 65609, 131218, 196827, 262436, 393654, 590481, 787308, 1180962, 1771443, 2361924, 3542886, 5314329, 7085772, 10628658, 21257316]

約数ペア:

[(1, 21257316), (2, 10628658), (3, 7085772), (4, 5314329), (6, 3542886), (9, 2361924), (12, 1771443), (18, 1180962), (27, 787308), (36, 590481), (54, 393654), (81, 262436), (108, 196827), (162, 131218), (324, 65609)]