81490388

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{47711}}^1$

素因数の和:47783

約数の個数: 24

約数和(自身を含む): 165656064

約数和(自身を除く): 84165676

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 47711, 95422, 190844, 333977, 667954, 1335908, 2910371, 5820742, 11641484, 20372597, 40745194, 81490388]

約数ペア:

[(1, 81490388), (2, 40745194), (4, 20372597), (7, 11641484), (14, 5820742), (28, 2910371), (61, 1335908), (122, 667954), (244, 333977), (427, 190844), (854, 95422), (1708, 47711)]