18930664

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{487}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 36717120

約数和(自身を除く): 17786456

約数列:

[1, 2, 4, 8, 43, 86, 113, 172, 226, 344, 452, 487, 904, 974, 1948, 3896, 4859, 9718, 19436, 20941, 38872, 41882, 55031, 83764, 110062, 167528, 220124, 440248, 2366333, 4732666, 9465332, 18930664]

約数ペア:

[(1, 18930664), (2, 9465332), (4, 4732666), (8, 2366333), (43, 440248), (86, 220124), (113, 167528), (172, 110062), (226, 83764), (344, 55031), (452, 41882), (487, 38872), (904, 20941), (974, 19436), (1948, 9718), (3896, 4859)]