21245421

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{3259}}^1$

素因数の和:3356

約数の個数: 16

約数和(自身を含む): 29574720

約数和(自身を除く): 8329299

約数列:

[1, 3, 41, 53, 123, 159, 2173, 3259, 6519, 9777, 133619, 172727, 400857, 518181, 7081807, 21245421]

約数ペア:

[(1, 21245421), (3, 7081807), (41, 518181), (53, 400857), (123, 172727), (159, 133619), (2173, 9777), (3259, 6519)]