21656670

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{367}}^1$

素因数の和:665

約数の個数: 64

約数和(自身を含む): 59774976

約数和(自身を除く): 38118306

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 281, 367, 562, 734, 843, 1101, 1405, 1686, 1835, 1967, 2202, 2569, 2810, 3670, 3934, 4215, 5138, 5505, 5901, 7707, 8430, 9835, 11010, 11802, 12845, 15414, 19670, 25690, 29505, 38535, 59010, 77070, 103127, 206254, 309381, 515635, 618762, 721889, 1031270, 1443778, 1546905, 2165667, 3093810, 3609445, 4331334, 7218890, 10828335, 21656670]

約数ペア:

[(1, 21656670), (2, 10828335), (3, 7218890), (5, 4331334), (6, 3609445), (7, 3093810), (10, 2165667), (14, 1546905), (15, 1443778), (21, 1031270), (30, 721889), (35, 618762), (42, 515635), (70, 309381), (105, 206254), (210, 103127), (281, 77070), (367, 59010), (562, 38535), (734, 29505), (843, 25690), (1101, 19670), (1405, 15414), (1686, 12845), (1835, 11802), (1967, 11010), (2202, 9835), (2569, 8430), (2810, 7707), (3670, 5901), (3934, 5505), (4215, 5138)]