16805720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{13553}}^1$

素因数の和:13595

約数の個数: 32

約数和(自身を含む): 39035520

約数和(自身を除く): 22229800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 13553, 27106, 54212, 67765, 108424, 135530, 271060, 420143, 542120, 840286, 1680572, 2100715, 3361144, 4201430, 8402860, 16805720]

約数ペア:

[(1, 16805720), (2, 8402860), (4, 4201430), (5, 3361144), (8, 2100715), (10, 1680572), (20, 840286), (31, 542120), (40, 420143), (62, 271060), (124, 135530), (155, 108424), (248, 67765), (310, 54212), (620, 27106), (1240, 13553)]