21491547

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13291}}^1$

素因数の和:13319

約数の個数: 24

約数和(自身を含む): 36366912

約数和(自身を除く): 14875365

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 13291, 39873, 93037, 146201, 279111, 438603, 651259, 1023407, 1953777, 3070221, 7163849, 21491547]

約数ペア:

[(1, 21491547), (3, 7163849), (7, 3070221), (11, 1953777), (21, 1023407), (33, 651259), (49, 438603), (77, 279111), (147, 146201), (231, 93037), (539, 39873), (1617, 13291)]