20666672

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7643}}^1$

素因数の和:7677

約数の個数: 30

約数和(自身を含む): 43364412

約数和(自身を除く): 22697740

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7643, 15286, 30572, 61144, 99359, 122288, 198718, 397436, 794872, 1291667, 1589744, 2583334, 5166668, 10333336, 20666672]

約数ペア:

[(1, 20666672), (2, 10333336), (4, 5166668), (8, 2583334), (13, 1589744), (16, 1291667), (26, 794872), (52, 397436), (104, 198718), (169, 122288), (208, 99359), (338, 61144), (676, 30572), (1352, 15286), (2704, 7643)]