172908638

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{398407}}^1$

素因数の和:398447

約数の個数: 16

約数和(自身を含む): 305977344

約数和(自身を除く): 133068706

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 398407, 796814, 2788849, 5577698, 12350617, 24701234, 86454319, 172908638]

約数ペア:

[(1, 172908638), (2, 86454319), (7, 24701234), (14, 12350617), (31, 5577698), (62, 2788849), (217, 796814), (434, 398407)]