21246340

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12799}}^1$

素因数の和:12891

約数の個数: 24

約数和(自身を含む): 45158400

約数和(自身を除く): 23912060

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12799, 25598, 51196, 63995, 127990, 255980, 1062317, 2124634, 4249268, 5311585, 10623170, 21246340]

約数ペア:

[(1, 21246340), (2, 10623170), (4, 5311585), (5, 4249268), (10, 2124634), (20, 1062317), (83, 255980), (166, 127990), (332, 63995), (415, 51196), (830, 25598), (1660, 12799)]