72205240

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{6661}}^1$

素因数の和:6943

約数の個数: 32

約数和(自身を含む): 163085760

約数和(自身を除く): 90880520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 6661, 10840, 13322, 26644, 33305, 53288, 66610, 133220, 266440, 1805131, 3610262, 7220524, 9025655, 14441048, 18051310, 36102620, 72205240]

約数ペア:

[(1, 72205240), (2, 36102620), (4, 18051310), (5, 14441048), (8, 9025655), (10, 7220524), (20, 3610262), (40, 1805131), (271, 266440), (542, 133220), (1084, 66610), (1355, 53288), (2168, 33305), (2710, 26644), (5420, 13322), (6661, 10840)]