644272

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{601}}^1$

素因数の和:676

約数の個数: 20

約数和(自身を含む): 1269016

約数和(自身を除く): 624744

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 601, 1072, 1202, 2404, 4808, 9616, 40267, 80534, 161068, 322136, 644272]

約数ペア:

[(1, 644272), (2, 322136), (4, 161068), (8, 80534), (16, 40267), (67, 9616), (134, 4808), (268, 2404), (536, 1202), (601, 1072)]