155990908

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{639307}}^1$

素因数の和:639372

約数の個数: 12

約数和(自身を含む): 277459672

約数和(自身を除く): 121468764

約数列:

[1, 2, 4, 61, 122, 244, 639307, 1278614, 2557228, 38997727, 77995454, 155990908]

約数ペア:

[(1, 155990908), (2, 77995454), (4, 38997727), (61, 2557228), (122, 1278614), (244, 639307)]