18721664

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{11251}}^1$

素因数の和:11278

約数の個数: 32

約数和(自身を含む): 40169640

約数和(自身を除く): 21447976

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 11251, 22502, 45004, 90008, 146263, 180016, 292526, 360032, 585052, 720064, 1170104, 1440128, 2340208, 4680416, 9360832, 18721664]

約数ペア:

[(1, 18721664), (2, 9360832), (4, 4680416), (8, 2340208), (13, 1440128), (16, 1170104), (26, 720064), (32, 585052), (52, 360032), (64, 292526), (104, 180016), (128, 146263), (208, 90008), (416, 45004), (832, 22502), (1664, 11251)]