20728161718

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1\times {\mathrm{74311}}^1$

素因数の和:74764

約数の個数: 32

約数和(自身を含む): 35099043840

約数和(自身を除く): 14370882122

約数列:

[1, 2, 11, 22, 31, 62, 341, 409, 682, 818, 4499, 8998, 12679, 25358, 74311, 139469, 148622, 278938, 817421, 1634842, 2303641, 4607282, 25340051, 30393199, 50680102, 60786398, 334325189, 668650378, 942189169, 1884378338, 10364080859, 20728161718]

約数ペア:

[(1, 20728161718), (2, 10364080859), (11, 1884378338), (22, 942189169), (31, 668650378), (62, 334325189), (341, 60786398), (409, 50680102), (682, 30393199), (818, 25340051), (4499, 4607282), (8998, 2303641), (12679, 1634842), (25358, 817421), (74311, 278938), (139469, 148622)]