21361744

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19927}}^1$

素因数の和:20002

約数の個数: 20

約数和(自身を含む): 42008224

約数和(自身を除く): 20646480

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19927, 39854, 79708, 159416, 318832, 1335109, 2670218, 5340436, 10680872, 21361744]

約数ペア:

[(1, 21361744), (2, 10680872), (4, 5340436), (8, 2670218), (16, 1335109), (67, 318832), (134, 159416), (268, 79708), (536, 39854), (1072, 19927)]