19866860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1777}}^1$

素因数の和:1842

約数の個数: 48

約数和(自身を含む): 46000416

約数和(自身を除く): 26133556

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 1777, 2236, 2795, 3554, 5590, 7108, 8885, 11180, 17770, 23101, 35540, 46202, 76411, 92404, 115505, 152822, 231010, 305644, 382055, 462020, 764110, 993343, 1528220, 1986686, 3973372, 4966715, 9933430, 19866860]

約数ペア:

[(1, 19866860), (2, 9933430), (4, 4966715), (5, 3973372), (10, 1986686), (13, 1528220), (20, 993343), (26, 764110), (43, 462020), (52, 382055), (65, 305644), (86, 231010), (130, 152822), (172, 115505), (215, 92404), (260, 76411), (430, 46202), (559, 35540), (860, 23101), (1118, 17770), (1777, 11180), (2236, 8885), (2795, 7108), (3554, 5590)]