211939980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{504619}}^1$

素因数の和:504638

約数の個数: 48

約数和(自身を含む): 678209280

約数和(自身を除く): 466269300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 504619, 1009238, 1513857, 2018476, 2523095, 3027714, 3532333, 5046190, 6055428, 7064666, 7569285, 10092380, 10596999, 14129332, 15138570, 17661665, 21193998, 30277140, 35323330, 42387996, 52984995, 70646660, 105969990, 211939980]

約数ペア:

[(1, 211939980), (2, 105969990), (3, 70646660), (4, 52984995), (5, 42387996), (6, 35323330), (7, 30277140), (10, 21193998), (12, 17661665), (14, 15138570), (15, 14129332), (20, 10596999), (21, 10092380), (28, 7569285), (30, 7064666), (35, 6055428), (42, 5046190), (60, 3532333), (70, 3027714), (84, 2523095), (105, 2018476), (140, 1513857), (210, 1009238), (420, 504619)]