40821.0000000

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 10396800

約数和(自身を除く): 6150680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 151, 152, 185, 190, 296, 302, 370, 380, 604, 703, 740, 755, 760, 1208, 1406, 1480, 1510, 2812, 2869, 3020, 3515, 5587, 5624, 5738, 6040, 7030, 11174, 11476, 14060, 14345, 22348, 22952, 27935, 28120, 28690, 44696, 55870, 57380, 106153, 111740, 114760, 212306, 223480, 424612, 530765, 849224, 1061530, 2123060, 4246120]

約数ペア:

[(1, 4246120), (2, 2123060), (4, 1061530), (5, 849224), (8, 530765), (10, 424612), (19, 223480), (20, 212306), (37, 114760), (38, 111740), (40, 106153), (74, 57380), (76, 55870), (95, 44696), (148, 28690), (151, 28120), (152, 27935), (185, 22952), (190, 22348), (296, 14345), (302, 14060), (370, 11476), (380, 11174), (604, 7030), (703, 6040), (740, 5738), (755, 5624), (760, 5587), (1208, 3515), (1406, 3020), (1480, 2869), (1510, 2812)]