20682860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2293}}^1$

素因数の和:2354

約数の個数: 48

約数和(自身を含む): 48559392

約数和(自身を除く): 27876532

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 2293, 4510, 4586, 9020, 9172, 11465, 22930, 25223, 45860, 50446, 94013, 100892, 126115, 188026, 252230, 376052, 470065, 504460, 940130, 1034143, 1880260, 2068286, 4136572, 5170715, 10341430, 20682860]

約数ペア:

[(1, 20682860), (2, 10341430), (4, 5170715), (5, 4136572), (10, 2068286), (11, 1880260), (20, 1034143), (22, 940130), (41, 504460), (44, 470065), (55, 376052), (82, 252230), (110, 188026), (164, 126115), (205, 100892), (220, 94013), (410, 50446), (451, 45860), (820, 25223), (902, 22930), (1804, 11465), (2255, 9172), (2293, 9020), (4510, 4586)]