21192897

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1021}}^1$

素因数の和:1089

約数の個数: 32

約数和(自身を含む): 33554304

約数和(自身を除く): 12361407

約数列:

[1, 3, 11, 17, 33, 37, 51, 111, 187, 407, 561, 629, 1021, 1221, 1887, 3063, 6919, 11231, 17357, 20757, 33693, 37777, 52071, 113331, 190927, 415547, 572781, 642209, 1246641, 1926627, 7064299, 21192897]

約数ペア:

[(1, 21192897), (3, 7064299), (11, 1926627), (17, 1246641), (33, 642209), (37, 572781), (51, 415547), (111, 190927), (187, 113331), (407, 52071), (561, 37777), (629, 33693), (1021, 20757), (1221, 17357), (1887, 11231), (3063, 6919)]