2691440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1979}}^1$

素因数の和:2009

約数の個数: 40

約数和(自身を含む): 6629040

約数和(自身を除く): 3937600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 1979, 3958, 7916, 9895, 15832, 19790, 31664, 33643, 39580, 67286, 79160, 134572, 158320, 168215, 269144, 336430, 538288, 672860, 1345720, 2691440]

約数ペア:

[(1, 2691440), (2, 1345720), (4, 672860), (5, 538288), (8, 336430), (10, 269144), (16, 168215), (17, 158320), (20, 134572), (34, 79160), (40, 67286), (68, 39580), (80, 33643), (85, 31664), (136, 19790), (170, 15832), (272, 9895), (340, 7916), (680, 3958), (1360, 1979)]