666172880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{489833}}^1$

素因数の和:489863

約数の個数: 40

約数和(自身を含む): 1639964232

約数和(自身を除く): 973791352

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 489833, 979666, 1959332, 2449165, 3918664, 4898330, 7837328, 8327161, 9796660, 16654322, 19593320, 33308644, 39186640, 41635805, 66617288, 83271610, 133234576, 166543220, 333086440, 666172880]

約数ペア:

[(1, 666172880), (2, 333086440), (4, 166543220), (5, 133234576), (8, 83271610), (10, 66617288), (16, 41635805), (17, 39186640), (20, 33308644), (34, 19593320), (40, 16654322), (68, 9796660), (80, 8327161), (85, 7837328), (136, 4898330), (170, 3918664), (272, 2449165), (340, 1959332), (680, 979666), (1360, 489833)]