221279279

素因数分解:

${\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1\times {\mathrm{541}}^1$

素因数の和:1058

約数の個数: 16

約数和(自身を含む): 242573184

約数和(自身を除く): 21293905

約数列:

[1, 13, 73, 431, 541, 949, 5603, 7033, 31463, 39493, 233171, 409019, 513409, 3031223, 17021483, 221279279]

約数ペア:

[(1, 221279279), (13, 17021483), (73, 3031223), (431, 513409), (541, 409019), (949, 233171), (5603, 39493), (7033, 31463)]