20809923778

素因数分解:

$2^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{2990791}}^1$

素因数の和:2990878

約数の個数: 24

約数和(自身を含む): 36822631104

約数和(自身を除く): 16012707326

約数列:

[1, 2, 7, 14, 49, 71, 98, 142, 497, 994, 3479, 6958, 2990791, 5981582, 20935537, 41871074, 146548759, 212346161, 293097518, 424692322, 1486423127, 2972846254, 10404961889, 20809923778]

約数ペア:

[(1, 20809923778), (2, 10404961889), (7, 2972846254), (14, 1486423127), (49, 424692322), (71, 293097518), (98, 212346161), (142, 146548759), (497, 41871074), (994, 20935537), (3479, 5981582), (6958, 2990791)]