20187040

素因数分解:

$2^5\times 5^1\times {\mathrm{281}}^1\times {\mathrm{449}}^1$

素因数の和:745

約数の個数: 48

約数和(自身を含む): 47968200

約数和(自身を除く): 27781160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 281, 449, 562, 898, 1124, 1405, 1796, 2245, 2248, 2810, 3592, 4490, 4496, 5620, 7184, 8980, 8992, 11240, 14368, 17960, 22480, 35920, 44960, 71840, 126169, 252338, 504676, 630845, 1009352, 1261690, 2018704, 2523380, 4037408, 5046760, 10093520, 20187040]

約数ペア:

[(1, 20187040), (2, 10093520), (4, 5046760), (5, 4037408), (8, 2523380), (10, 2018704), (16, 1261690), (20, 1009352), (32, 630845), (40, 504676), (80, 252338), (160, 126169), (281, 71840), (449, 44960), (562, 35920), (898, 22480), (1124, 17960), (1405, 14368), (1796, 11240), (2245, 8992), (2248, 8980), (2810, 7184), (3592, 5620), (4490, 4496)]