18903664

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{6991}}^1$

素因数の和:7025

約数の個数: 30

約数和(自身を含む): 39665616

約数和(自身を除く): 20761952

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 6991, 13982, 27964, 55928, 90883, 111856, 181766, 363532, 727064, 1181479, 1454128, 2362958, 4725916, 9451832, 18903664]

約数ペア:

[(1, 18903664), (2, 9451832), (4, 4725916), (8, 2362958), (13, 1454128), (16, 1181479), (26, 727064), (52, 363532), (104, 181766), (169, 111856), (208, 90883), (338, 55928), (676, 27964), (1352, 13982), (2704, 6991)]