28065640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{277}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 67554000

約数和(自身を除く): 39488360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 149, 170, 277, 298, 340, 554, 596, 680, 745, 1108, 1192, 1385, 1490, 2216, 2533, 2770, 2980, 4709, 5066, 5540, 5960, 9418, 10132, 11080, 12665, 18836, 20264, 23545, 25330, 37672, 41273, 47090, 50660, 82546, 94180, 101320, 165092, 188360, 206365, 330184, 412730, 701641, 825460, 1403282, 1650920, 2806564, 3508205, 5613128, 7016410, 14032820, 28065640]

約数ペア:

[(1, 28065640), (2, 14032820), (4, 7016410), (5, 5613128), (8, 3508205), (10, 2806564), (17, 1650920), (20, 1403282), (34, 825460), (40, 701641), (68, 412730), (85, 330184), (136, 206365), (149, 188360), (170, 165092), (277, 101320), (298, 94180), (340, 82546), (554, 50660), (596, 47090), (680, 41273), (745, 37672), (1108, 25330), (1192, 23545), (1385, 20264), (1490, 18836), (2216, 12665), (2533, 11080), (2770, 10132), (2980, 9418), (4709, 5960), (5066, 5540)]