81401420

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{49037}}^1$

素因数の和:49129

約数の個数: 24

約数和(自身を含む): 173006064

約数和(自身を除く): 91604644

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 49037, 98074, 196148, 245185, 490370, 980740, 4070071, 8140142, 16280284, 20350355, 40700710, 81401420]

約数ペア:

[(1, 81401420), (2, 40700710), (4, 20350355), (5, 16280284), (10, 8140142), (20, 4070071), (83, 980740), (166, 490370), (332, 245185), (415, 196148), (830, 98074), (1660, 49037)]