208507720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^3\times {\mathrm{1061}}^1$

素因数の和:1123

約数の個数: 64

約数和(自身を含む): 498927600

約数和(自身を除く): 290419880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1061, 1156, 1445, 2122, 2312, 2890, 4244, 4913, 5305, 5780, 8488, 9826, 10610, 11560, 18037, 19652, 21220, 24565, 36074, 39304, 42440, 49130, 72148, 90185, 98260, 144296, 180370, 196520, 306629, 360740, 613258, 721480, 1226516, 1533145, 2453032, 3066290, 5212693, 6132580, 10425386, 12265160, 20850772, 26063465, 41701544, 52126930, 104253860, 208507720]

約数ペア:

[(1, 208507720), (2, 104253860), (4, 52126930), (5, 41701544), (8, 26063465), (10, 20850772), (17, 12265160), (20, 10425386), (34, 6132580), (40, 5212693), (68, 3066290), (85, 2453032), (136, 1533145), (170, 1226516), (289, 721480), (340, 613258), (578, 360740), (680, 306629), (1061, 196520), (1156, 180370), (1445, 144296), (2122, 98260), (2312, 90185), (2890, 72148), (4244, 49130), (4913, 42440), (5305, 39304), (5780, 36074), (8488, 24565), (9826, 21220), (10610, 19652), (11560, 18037)]