1021000400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{364643}}^1$

素因数の和:364668

約数の個数: 60

約数和(自身を含む): 2803383072

約数和(自身を除く): 1782382672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 140, 175, 200, 280, 350, 400, 560, 700, 1400, 2800, 364643, 729286, 1458572, 1823215, 2552501, 2917144, 3646430, 5105002, 5834288, 7292860, 9116075, 10210004, 12762505, 14585720, 18232150, 20420008, 25525010, 29171440, 36464300, 40840016, 51050020, 63812525, 72928600, 102100040, 127625050, 145857200, 204200080, 255250100, 510500200, 1021000400]

約数ペア:

[(1, 1021000400), (2, 510500200), (4, 255250100), (5, 204200080), (7, 145857200), (8, 127625050), (10, 102100040), (14, 72928600), (16, 63812525), (20, 51050020), (25, 40840016), (28, 36464300), (35, 29171440), (40, 25525010), (50, 20420008), (56, 18232150), (70, 14585720), (80, 12762505), (100, 10210004), (112, 9116075), (140, 7292860), (175, 5834288), (200, 5105002), (280, 3646430), (350, 2917144), (400, 2552501), (560, 1823215), (700, 1458572), (1400, 729286), (2800, 364643)]