21072328

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1489}}^1$

素因数の和:1585

約数の個数: 32

約数和(自身を含む): 41571000

約数和(自身を除く): 20498672

約数列:

[1, 2, 4, 8, 29, 58, 61, 116, 122, 232, 244, 488, 1489, 1769, 2978, 3538, 5956, 7076, 11912, 14152, 43181, 86362, 90829, 172724, 181658, 345448, 363316, 726632, 2634041, 5268082, 10536164, 21072328]

約数ペア:

[(1, 21072328), (2, 10536164), (4, 5268082), (8, 2634041), (29, 726632), (58, 363316), (61, 345448), (116, 181658), (122, 172724), (232, 90829), (244, 86362), (488, 43181), (1489, 14152), (1769, 11912), (2978, 7076), (3538, 5956)]