20666792

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{229}}^1\times {\mathrm{389}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 40365000

約数和(自身を除く): 19698208

約数列:

[1, 2, 4, 8, 29, 58, 116, 229, 232, 389, 458, 778, 916, 1556, 1832, 3112, 6641, 11281, 13282, 22562, 26564, 45124, 53128, 89081, 90248, 178162, 356324, 712648, 2583349, 5166698, 10333396, 20666792]

約数ペア:

[(1, 20666792), (2, 10333396), (4, 5166698), (8, 2583349), (29, 712648), (58, 356324), (116, 178162), (229, 90248), (232, 89081), (389, 53128), (458, 45124), (778, 26564), (916, 22562), (1556, 13282), (1832, 11281), (3112, 6641)]