20586920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12553}}^1$

素因数の和:12605

約数の個数: 32

約数和(自身を含む): 47454120

約数和(自身を除く): 26867200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12553, 25106, 50212, 62765, 100424, 125530, 251060, 502120, 514673, 1029346, 2058692, 2573365, 4117384, 5146730, 10293460, 20586920]

約数ペア:

[(1, 20586920), (2, 10293460), (4, 5146730), (5, 4117384), (8, 2573365), (10, 2058692), (20, 1029346), (40, 514673), (41, 502120), (82, 251060), (164, 125530), (205, 100424), (328, 62765), (410, 50212), (820, 25106), (1640, 12553)]