81426560

素因数分解:

$2^7\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2707}}^1$

素因数の和:2773

約数の個数: 64

約数和(自身を含む): 198875520

約数和(自身を除く): 117448960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 640, 752, 940, 1504, 1880, 2707, 3008, 3760, 5414, 6016, 7520, 10828, 13535, 15040, 21656, 27070, 30080, 43312, 54140, 86624, 108280, 127229, 173248, 216560, 254458, 346496, 433120, 508916, 636145, 866240, 1017832, 1272290, 1732480, 2035664, 2544580, 4071328, 5089160, 8142656, 10178320, 16285312, 20356640, 40713280, 81426560]

約数ペア:

[(1, 81426560), (2, 40713280), (4, 20356640), (5, 16285312), (8, 10178320), (10, 8142656), (16, 5089160), (20, 4071328), (32, 2544580), (40, 2035664), (47, 1732480), (64, 1272290), (80, 1017832), (94, 866240), (128, 636145), (160, 508916), (188, 433120), (235, 346496), (320, 254458), (376, 216560), (470, 173248), (640, 127229), (752, 108280), (940, 86624), (1504, 54140), (1880, 43312), (2707, 30080), (3008, 27070), (3760, 21656), (5414, 15040), (6016, 13535), (7520, 10828)]