668913

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{601}}^1$

素因数の和:664

約数の個数: 16

約数和(自身を含む): 1040256

約数和(自身を除く): 371343

約数列:

[1, 3, 7, 21, 53, 159, 371, 601, 1113, 1803, 4207, 12621, 31853, 95559, 222971, 668913]

約数ペア:

[(1, 668913), (3, 222971), (7, 95559), (21, 31853), (53, 12621), (159, 4207), (371, 1803), (601, 1113)]