81340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83}}^1$

素因数の和:106

約数の個数: 36

約数和(自身を含む): 201096

約数和(自身を除く): 119756

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 83, 98, 140, 166, 196, 245, 332, 415, 490, 581, 830, 980, 1162, 1660, 2324, 2905, 4067, 5810, 8134, 11620, 16268, 20335, 40670, 81340]

約数ペア:

[(1, 81340), (2, 40670), (4, 20335), (5, 16268), (7, 11620), (10, 8134), (14, 5810), (20, 4067), (28, 2905), (35, 2324), (49, 1660), (70, 1162), (83, 980), (98, 830), (140, 581), (166, 490), (196, 415), (245, 332)]