18640185

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{587}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 31328640

約数和(自身を除く): 12688455

約数列:

[1, 3, 5, 15, 29, 73, 87, 145, 219, 365, 435, 587, 1095, 1761, 2117, 2935, 6351, 8805, 10585, 17023, 31755, 42851, 51069, 85115, 128553, 214255, 255345, 642765, 1242679, 3728037, 6213395, 18640185]

約数ペア:

[(1, 18640185), (3, 6213395), (5, 3728037), (15, 1242679), (29, 642765), (73, 255345), (87, 214255), (145, 128553), (219, 85115), (365, 51069), (435, 42851), (587, 31755), (1095, 17023), (1761, 10585), (2117, 8805), (2935, 6351)]