21873115

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{17291}}^1$

素因数の和:17330

約数の個数: 16

約数和(自身を含む): 29880576

約数和(自身を除く): 8007461

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 17291, 86455, 190201, 397693, 951005, 1988465, 4374623, 21873115]

約数ペア:

[(1, 21873115), (5, 4374623), (11, 1988465), (23, 951005), (55, 397693), (115, 190201), (253, 86455), (1265, 17291)]