21072963

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1\times {\mathrm{653}}^1$

素因数の和:1034

約数の個数: 16

約数和(自身を含む): 29131776

約数和(自身を除く): 8058813

約数列:

[1, 3, 31, 93, 347, 653, 1041, 1959, 10757, 20243, 32271, 60729, 226591, 679773, 7024321, 21072963]

約数ペア:

[(1, 21072963), (3, 7024321), (31, 679773), (93, 226591), (347, 60729), (653, 32271), (1041, 20243), (1959, 10757)]