21216972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{252583}}^1$

素因数の和:252597

約数の個数: 24

約数和(自身を含む): 56578816

約数和(自身を除く): 35361844

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 252583, 505166, 757749, 1010332, 1515498, 1768081, 3030996, 3536162, 5304243, 7072324, 10608486, 21216972]

約数ペア:

[(1, 21216972), (2, 10608486), (3, 7072324), (4, 5304243), (6, 3536162), (7, 3030996), (12, 1768081), (14, 1515498), (21, 1010332), (28, 757749), (42, 505166), (84, 252583)]