81295180

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{48973}}^1$

素因数の和:49065

約数の個数: 24

約数和(自身を含む): 172780272

約数和(自身を除く): 91485092

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 48973, 97946, 195892, 244865, 489730, 979460, 4064759, 8129518, 16259036, 20323795, 40647590, 81295180]

約数ペア:

[(1, 81295180), (2, 40647590), (4, 20323795), (5, 16259036), (10, 8129518), (20, 4064759), (83, 979460), (166, 489730), (332, 244865), (415, 195892), (830, 97946), (1660, 48973)]