81240764

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{101}}^2\times {\mathrm{181}}^1$

素因数の和:398

約数の個数: 36

約数和(自身を含む): 157512264

約数和(自身を除く): 76271500

約数列:

[1, 2, 4, 11, 22, 44, 101, 181, 202, 362, 404, 724, 1111, 1991, 2222, 3982, 4444, 7964, 10201, 18281, 20402, 36562, 40804, 73124, 112211, 201091, 224422, 402182, 448844, 804364, 1846381, 3692762, 7385524, 20310191, 40620382, 81240764]

約数ペア:

[(1, 81240764), (2, 40620382), (4, 20310191), (11, 7385524), (22, 3692762), (44, 1846381), (101, 804364), (181, 448844), (202, 402182), (362, 224422), (404, 201091), (724, 112211), (1111, 73124), (1991, 40804), (2222, 36562), (3982, 20402), (4444, 18281), (7964, 10201)]