16819245

素因数分解:

$3^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 30750720

約数和(自身を除く): 13931475

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 109, 127, 135, 243, 327, 381, 405, 545, 635, 981, 1143, 1215, 1635, 1905, 2943, 3429, 4905, 5715, 8829, 10287, 13843, 14715, 17145, 26487, 30861, 41529, 44145, 51435, 69215, 124587, 132435, 154305, 207645, 373761, 622935, 1121283, 1868805, 3363849, 5606415, 16819245]

約数ペア:

[(1, 16819245), (3, 5606415), (5, 3363849), (9, 1868805), (15, 1121283), (27, 622935), (45, 373761), (81, 207645), (109, 154305), (127, 132435), (135, 124587), (243, 69215), (327, 51435), (381, 44145), (405, 41529), (545, 30861), (635, 26487), (981, 17145), (1143, 14715), (1215, 13843), (1635, 10287), (1905, 8829), (2943, 5715), (3429, 4905)]