17442220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 20660180

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 239, 356, 410, 445, 478, 820, 890, 956, 1195, 1780, 2390, 3649, 4780, 7298, 9799, 14596, 18245, 19598, 21271, 36490, 39196, 42542, 48995, 72980, 85084, 97990, 106355, 195980, 212710, 425420, 872111, 1744222, 3488444, 4360555, 8721110, 17442220]

約数ペア:

[(1, 17442220), (2, 8721110), (4, 4360555), (5, 3488444), (10, 1744222), (20, 872111), (41, 425420), (82, 212710), (89, 195980), (164, 106355), (178, 97990), (205, 85084), (239, 72980), (356, 48995), (410, 42542), (445, 39196), (478, 36490), (820, 21271), (890, 19598), (956, 18245), (1195, 14596), (1780, 9799), (2390, 7298), (3649, 4780)]