20297890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2273}}^1$

素因数の和:2346

約数の個数: 32

約数和(自身を含む): 39294720

約数和(自身を除く): 18996830

約数列:

[1, 2, 5, 10, 19, 38, 47, 94, 95, 190, 235, 470, 893, 1786, 2273, 4465, 4546, 8930, 11365, 22730, 43187, 86374, 106831, 213662, 215935, 431870, 534155, 1068310, 2029789, 4059578, 10148945, 20297890]

約数ペア:

[(1, 20297890), (2, 10148945), (5, 4059578), (10, 2029789), (19, 1068310), (38, 534155), (47, 431870), (94, 215935), (95, 213662), (190, 106831), (235, 86374), (470, 43187), (893, 22730), (1786, 11365), (2273, 8930), (4465, 4546)]