18349780

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 40085136

約数和(自身を除く): 21735356

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 137, 148, 181, 185, 274, 362, 370, 548, 685, 724, 740, 905, 1370, 1810, 2740, 3620, 5069, 6697, 10138, 13394, 20276, 24797, 25345, 26788, 33485, 49594, 50690, 66970, 99188, 101380, 123985, 133940, 247970, 495940, 917489, 1834978, 3669956, 4587445, 9174890, 18349780]

約数ペア:

[(1, 18349780), (2, 9174890), (4, 4587445), (5, 3669956), (10, 1834978), (20, 917489), (37, 495940), (74, 247970), (137, 133940), (148, 123985), (181, 101380), (185, 99188), (274, 66970), (362, 50690), (370, 49594), (548, 33485), (685, 26788), (724, 25345), (740, 24797), (905, 20276), (1370, 13394), (1810, 10138), (2740, 6697), (3620, 5069)]