21806708

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{701}}^1$

素因数の和:824

約数の個数: 48

約数和(自身を含む): 48117888

約数和(自身を除く): 26311180

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 101, 154, 202, 308, 404, 701, 707, 1111, 1402, 1414, 2222, 2804, 2828, 4444, 4907, 7711, 7777, 9814, 15422, 15554, 19628, 30844, 31108, 53977, 70801, 107954, 141602, 215908, 283204, 495607, 778811, 991214, 1557622, 1982428, 3115244, 5451677, 10903354, 21806708]

約数ペア:

[(1, 21806708), (2, 10903354), (4, 5451677), (7, 3115244), (11, 1982428), (14, 1557622), (22, 991214), (28, 778811), (44, 495607), (77, 283204), (101, 215908), (154, 141602), (202, 107954), (308, 70801), (404, 53977), (701, 31108), (707, 30844), (1111, 19628), (1402, 15554), (1414, 15422), (2222, 9814), (2804, 7777), (2828, 7711), (4444, 4907)]