21403802

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:494

約数の個数: 32

約数和(自身を含む): 37926144

約数和(自身を除く): 16522342

約数列:

[1, 2, 7, 14, 61, 71, 122, 142, 353, 427, 497, 706, 854, 994, 2471, 4331, 4942, 8662, 21533, 25063, 30317, 43066, 50126, 60634, 150731, 175441, 301462, 350882, 1528843, 3057686, 10701901, 21403802]

約数ペア:

[(1, 21403802), (2, 10701901), (7, 3057686), (14, 1528843), (61, 350882), (71, 301462), (122, 175441), (142, 150731), (353, 60634), (427, 50126), (497, 43066), (706, 30317), (854, 25063), (994, 21533), (2471, 8662), (4331, 4942)]