20931664

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7741}}^1$

素因数の和:7775

約数の個数: 30

約数和(自身を含む): 43920366

約数和(自身を除く): 22988702

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7741, 15482, 30964, 61928, 100633, 123856, 201266, 402532, 805064, 1308229, 1610128, 2616458, 5232916, 10465832, 20931664]

約数ペア:

[(1, 20931664), (2, 10465832), (4, 5232916), (8, 2616458), (13, 1610128), (16, 1308229), (26, 805064), (52, 402532), (104, 201266), (169, 123856), (208, 100633), (338, 61928), (676, 30964), (1352, 15482), (2704, 7741)]