20281051

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:379

約数の個数: 24

約数和(自身を含む): 25338096

約数和(自身を除く): 5057045

約数列:

[1, 7, 17, 49, 97, 119, 251, 679, 833, 1649, 1757, 4267, 4753, 11543, 12299, 24347, 29869, 80801, 170429, 209083, 413899, 1193003, 2897293, 20281051]

約数ペア:

[(1, 20281051), (7, 2897293), (17, 1193003), (49, 413899), (97, 209083), (119, 170429), (251, 80801), (679, 29869), (833, 24347), (1649, 12299), (1757, 11543), (4267, 4753)]