21289216

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{6397}}^1$

素因数の和:6426

約数の個数: 36

約数和(自身を含む): 45771292

約数和(自身を除く): 24482076

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 832, 1664, 3328, 6397, 12794, 25588, 51176, 83161, 102352, 166322, 204704, 332644, 409408, 665288, 818816, 1330576, 1637632, 2661152, 5322304, 10644608, 21289216]

約数ペア:

[(1, 21289216), (2, 10644608), (4, 5322304), (8, 2661152), (13, 1637632), (16, 1330576), (26, 818816), (32, 665288), (52, 409408), (64, 332644), (104, 204704), (128, 166322), (208, 102352), (256, 83161), (416, 51176), (832, 25588), (1664, 12794), (3328, 6397)]