257013

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:198

約数の個数: 20

約数和(自身を含む): 406560

約数和(自身を除く): 149547

約数列:

[1, 3, 9, 19, 27, 57, 81, 167, 171, 501, 513, 1503, 1539, 3173, 4509, 9519, 13527, 28557, 85671, 257013]

約数ペア:

[(1, 257013), (3, 85671), (9, 28557), (19, 13527), (27, 9519), (57, 4509), (81, 3173), (167, 1539), (171, 1503), (501, 513)]