20810821

素因数分解:

${\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:312

約数の個数: 16

約数和(自身を含む): 22217328

約数和(自身を除く): 1406507

約数列:

[1, 41, 53, 61, 157, 2173, 2501, 3233, 6437, 8321, 9577, 132553, 341161, 392657, 507581, 20810821]

約数ペア:

[(1, 20810821), (41, 507581), (53, 392657), (61, 341161), (157, 132553), (2173, 9577), (2501, 8321), (3233, 6437)]