20111320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12263}}^1$

素因数の和:12315

約数の個数: 32

約数和(自身を含む): 46357920

約数和(自身を除く): 26246600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12263, 24526, 49052, 61315, 98104, 122630, 245260, 490520, 502783, 1005566, 2011132, 2513915, 4022264, 5027830, 10055660, 20111320]

約数ペア:

[(1, 20111320), (2, 10055660), (4, 5027830), (5, 4022264), (8, 2513915), (10, 2011132), (20, 1005566), (40, 502783), (41, 490520), (82, 245260), (164, 122630), (205, 98104), (328, 61315), (410, 49052), (820, 24526), (1640, 12263)]