18779540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72229}}^1$

素因数の和:72251

約数の個数: 24

約数和(自身を含む): 42471240

約数和(自身を除く): 23691700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72229, 144458, 288916, 361145, 722290, 938977, 1444580, 1877954, 3755908, 4694885, 9389770, 18779540]

約数ペア:

[(1, 18779540), (2, 9389770), (4, 4694885), (5, 3755908), (10, 1877954), (13, 1444580), (20, 938977), (26, 722290), (52, 361145), (65, 288916), (130, 144458), (260, 72229)]