16730440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 39346560

約数和(自身を除く): 22616120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 71, 86, 137, 142, 172, 215, 274, 284, 344, 355, 430, 548, 568, 685, 710, 860, 1096, 1370, 1420, 1720, 2740, 2840, 3053, 5480, 5891, 6106, 9727, 11782, 12212, 15265, 19454, 23564, 24424, 29455, 30530, 38908, 47128, 48635, 58910, 61060, 77816, 97270, 117820, 122120, 194540, 235640, 389080, 418261, 836522, 1673044, 2091305, 3346088, 4182610, 8365220, 16730440]

約数ペア:

[(1, 16730440), (2, 8365220), (4, 4182610), (5, 3346088), (8, 2091305), (10, 1673044), (20, 836522), (40, 418261), (43, 389080), (71, 235640), (86, 194540), (137, 122120), (142, 117820), (172, 97270), (215, 77816), (274, 61060), (284, 58910), (344, 48635), (355, 47128), (430, 38908), (548, 30530), (568, 29455), (685, 24424), (710, 23564), (860, 19454), (1096, 15265), (1370, 12212), (1420, 11782), (1720, 9727), (2740, 6106), (2840, 5891), (3053, 5480)]