21550490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1709}}^1$

素因数の和:1826

約数の個数: 32

約数和(自身を含む): 42230160

約数和(自身を除く): 20679670

約数列:

[1, 2, 5, 10, 13, 26, 65, 97, 130, 194, 485, 970, 1261, 1709, 2522, 3418, 6305, 8545, 12610, 17090, 22217, 44434, 111085, 165773, 222170, 331546, 828865, 1657730, 2155049, 4310098, 10775245, 21550490]

約数ペア:

[(1, 21550490), (2, 10775245), (5, 4310098), (10, 2155049), (13, 1657730), (26, 828865), (65, 331546), (97, 222170), (130, 165773), (194, 111085), (485, 44434), (970, 22217), (1261, 17090), (1709, 12610), (2522, 8545), (3418, 6305)]