205121320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{301649}}^1$

素因数の和:301677

約数の個数: 32

約数和(自身を含む): 488673000

約数和(自身を除く): 283551680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 301649, 603298, 1206596, 1508245, 2413192, 3016490, 5128033, 6032980, 10256066, 12065960, 20512132, 25640165, 41024264, 51280330, 102560660, 205121320]

約数ペア:

[(1, 205121320), (2, 102560660), (4, 51280330), (5, 41024264), (8, 25640165), (10, 20512132), (17, 12065960), (20, 10256066), (34, 6032980), (40, 5128033), (68, 3016490), (85, 2413192), (136, 1508245), (170, 1206596), (340, 603298), (680, 301649)]