18490491

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 28600320

約数和(自身を除く): 10109829

約数列:

[1, 3, 9, 27, 37, 83, 111, 223, 249, 333, 669, 747, 999, 2007, 2241, 3071, 6021, 8251, 9213, 18509, 24753, 27639, 55527, 74259, 82917, 166581, 222777, 499743, 684833, 2054499, 6163497, 18490491]

約数ペア:

[(1, 18490491), (3, 6163497), (9, 2054499), (27, 684833), (37, 499743), (83, 222777), (111, 166581), (223, 82917), (249, 74259), (333, 55527), (669, 27639), (747, 24753), (999, 18509), (2007, 9213), (2241, 8251), (3071, 6021)]