18633620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{461}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 40981248

約数和(自身を除く): 22347628

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 461, 470, 860, 922, 940, 1844, 2021, 2305, 4042, 4610, 8084, 9220, 10105, 19823, 20210, 21667, 39646, 40420, 43334, 79292, 86668, 99115, 108335, 198230, 216670, 396460, 433340, 931681, 1863362, 3726724, 4658405, 9316810, 18633620]

約数ペア:

[(1, 18633620), (2, 9316810), (4, 4658405), (5, 3726724), (10, 1863362), (20, 931681), (43, 433340), (47, 396460), (86, 216670), (94, 198230), (172, 108335), (188, 99115), (215, 86668), (235, 79292), (430, 43334), (461, 40420), (470, 39646), (860, 21667), (922, 20210), (940, 19823), (1844, 10105), (2021, 9220), (2305, 8084), (4042, 4610)]