18679180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71843}}^1$

素因数の和:71865

約数の個数: 24

約数和(自身を含む): 42244272

約数和(自身を除く): 23565092

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71843, 143686, 287372, 359215, 718430, 933959, 1436860, 1867918, 3735836, 4669795, 9339590, 18679180]

約数ペア:

[(1, 18679180), (2, 9339590), (4, 4669795), (5, 3735836), (10, 1867918), (13, 1436860), (20, 933959), (26, 718430), (52, 359215), (65, 287372), (130, 143686), (260, 71843)]