20548220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1213}}^1$

素因数の和:1251

約数の個数: 72

約数和(自身を含む): 54251232

約数和(自身を除く): 33703012

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1213, 1540, 1694, 2420, 2426, 3388, 4235, 4852, 6065, 8470, 8491, 12130, 13343, 16940, 16982, 24260, 26686, 33964, 42455, 53372, 66715, 84910, 93401, 133430, 146773, 169820, 186802, 266860, 293546, 373604, 467005, 587092, 733865, 934010, 1027411, 1467730, 1868020, 2054822, 2935460, 4109644, 5137055, 10274110, 20548220]

約数ペア:

[(1, 20548220), (2, 10274110), (4, 5137055), (5, 4109644), (7, 2935460), (10, 2054822), (11, 1868020), (14, 1467730), (20, 1027411), (22, 934010), (28, 733865), (35, 587092), (44, 467005), (55, 373604), (70, 293546), (77, 266860), (110, 186802), (121, 169820), (140, 146773), (154, 133430), (220, 93401), (242, 84910), (308, 66715), (385, 53372), (484, 42455), (605, 33964), (770, 26686), (847, 24260), (1210, 16982), (1213, 16940), (1540, 13343), (1694, 12130), (2420, 8491), (2426, 8470), (3388, 6065), (4235, 4852)]