21138320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37747}}^1$

素因数の和:37767

約数の個数: 40

約数和(自身を含む): 56169024

約数和(自身を除く): 35030704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37747, 75494, 150988, 188735, 264229, 301976, 377470, 528458, 603952, 754940, 1056916, 1321145, 1509880, 2113832, 2642290, 3019760, 4227664, 5284580, 10569160, 21138320]

約数ペア:

[(1, 21138320), (2, 10569160), (4, 5284580), (5, 4227664), (7, 3019760), (8, 2642290), (10, 2113832), (14, 1509880), (16, 1321145), (20, 1056916), (28, 754940), (35, 603952), (40, 528458), (56, 377470), (70, 301976), (80, 264229), (112, 188735), (140, 150988), (280, 75494), (560, 37747)]