20156522800

素因数分解:

$2^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{826087}}^1$

素因数の和:826166

約数の個数: 60

約数和(自身を含む): 49219975216

約数和(自身を除く): 29063452416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 200, 244, 305, 400, 488, 610, 976, 1220, 1525, 2440, 3050, 4880, 6100, 12200, 24400, 826087, 1652174, 3304348, 4130435, 6608696, 8260870, 13217392, 16521740, 20652175, 33043480, 41304350, 50391307, 66086960, 82608700, 100782614, 165217400, 201565228, 251956535, 330434800, 403130456, 503913070, 806260912, 1007826140, 1259782675, 2015652280, 2519565350, 4031304560, 5039130700, 10078261400, 20156522800]

約数ペア:

[(1, 20156522800), (2, 10078261400), (4, 5039130700), (5, 4031304560), (8, 2519565350), (10, 2015652280), (16, 1259782675), (20, 1007826140), (25, 806260912), (40, 503913070), (50, 403130456), (61, 330434800), (80, 251956535), (100, 201565228), (122, 165217400), (200, 100782614), (244, 82608700), (305, 66086960), (400, 50391307), (488, 41304350), (610, 33043480), (976, 20652175), (1220, 16521740), (1525, 13217392), (2440, 8260870), (3050, 6608696), (4880, 4130435), (6100, 3304348), (12200, 1652174), (24400, 826087)]