81004430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{3163}}^1$

素因数の和:3380

約数の個数: 32

約数和(自身を含む): 157870944

約数和(自身を除く): 76866514

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 197, 394, 985, 1970, 2561, 3163, 5122, 6326, 12805, 15815, 25610, 31630, 41119, 82238, 205595, 411190, 623111, 1246222, 3115555, 6231110, 8100443, 16200886, 40502215, 81004430]

約数ペア:

[(1, 81004430), (2, 40502215), (5, 16200886), (10, 8100443), (13, 6231110), (26, 3115555), (65, 1246222), (130, 623111), (197, 411190), (394, 205595), (985, 82238), (1970, 41119), (2561, 31630), (3163, 25610), (5122, 15815), (6326, 12805)]