21292538

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:242

約数の個数: 32

約数和(自身を含む): 34350480

約数和(自身を除く): 13057942

約数列:

[1, 2, 37, 53, 61, 74, 89, 106, 122, 178, 1961, 2257, 3233, 3293, 3922, 4514, 4717, 5429, 6466, 6586, 9434, 10858, 119621, 174529, 200873, 239242, 287737, 349058, 401746, 575474, 10646269, 21292538]

約数ペア:

[(1, 21292538), (2, 10646269), (37, 575474), (53, 401746), (61, 349058), (74, 287737), (89, 239242), (106, 200873), (122, 174529), (178, 119621), (1961, 10858), (2257, 9434), (3233, 6586), (3293, 6466), (3922, 5429), (4514, 4717)]