81058240

素因数分解:

$2^6\times 5^1\times {\mathrm{253307}}^1$

素因数の和:253324

約数の個数: 28

約数和(自身を含む): 193020696

約数和(自身を除く): 111962456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 253307, 506614, 1013228, 1266535, 2026456, 2533070, 4052912, 5066140, 8105824, 10132280, 16211648, 20264560, 40529120, 81058240]

約数ペア:

[(1, 81058240), (2, 40529120), (4, 20264560), (5, 16211648), (8, 10132280), (10, 8105824), (16, 5066140), (20, 4052912), (32, 2533070), (40, 2026456), (64, 1266535), (80, 1013228), (160, 506614), (320, 253307)]