208505680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{153313}}^1$

素因数の和:153343

約数の個数: 40

約数和(自身を含む): 513295272

約数和(自身を除く): 304789592

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 153313, 306626, 613252, 766565, 1226504, 1533130, 2453008, 2606321, 3066260, 5212642, 6132520, 10425284, 12265040, 13031605, 20850568, 26063210, 41701136, 52126420, 104252840, 208505680]

約数ペア:

[(1, 208505680), (2, 104252840), (4, 52126420), (5, 41701136), (8, 26063210), (10, 20850568), (16, 13031605), (17, 12265040), (20, 10425284), (34, 6132520), (40, 5212642), (68, 3066260), (80, 2606321), (85, 2453008), (136, 1533130), (170, 1226504), (272, 766565), (340, 613252), (680, 306626), (1360, 153313)]