209739928

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{639451}}^1$

素因数の和:639498

約数の個数: 16

約数和(自身を含む): 402854760

約数和(自身を除く): 193114832

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 639451, 1278902, 2557804, 5115608, 26217491, 52434982, 104869964, 209739928]

約数ペア:

[(1, 209739928), (2, 104869964), (4, 52434982), (8, 26217491), (41, 5115608), (82, 2557804), (164, 1278902), (328, 639451)]