21293170

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2153}}^1$

素因数の和:2226

約数の個数: 32

約数和(自身を含む): 40943232

約数和(自身を除く): 19650062

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 2153, 4306, 4945, 9890, 10765, 21530, 49519, 92579, 99038, 185158, 247595, 462895, 495190, 925790, 2129317, 4258634, 10646585, 21293170]

約数ペア:

[(1, 21293170), (2, 10646585), (5, 4258634), (10, 2129317), (23, 925790), (43, 495190), (46, 462895), (86, 247595), (115, 185158), (215, 99038), (230, 92579), (430, 49519), (989, 21530), (1978, 10765), (2153, 9890), (4306, 4945)]