20721228

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{156979}}^1$

素因数の和:156997

約数の個数: 24

約数和(自身を含む): 52745280

約数和(自身を除く): 32024052

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 156979, 313958, 470937, 627916, 941874, 1726769, 1883748, 3453538, 5180307, 6907076, 10360614, 20721228]

約数ペア:

[(1, 20721228), (2, 10360614), (3, 6907076), (4, 5180307), (6, 3453538), (11, 1883748), (12, 1726769), (22, 941874), (33, 627916), (44, 470937), (66, 313958), (132, 156979)]