18277840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:404

約数の個数: 80

約数和(自身を含む): 49139712

約数和(自身を除く): 30861872

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 257, 280, 508, 514, 560, 635, 889, 1016, 1028, 1270, 1285, 1778, 1799, 2032, 2056, 2540, 2570, 3556, 3598, 4112, 4445, 5080, 5140, 7112, 7196, 8890, 8995, 10160, 10280, 14224, 14392, 17780, 17990, 20560, 28784, 32639, 35560, 35980, 65278, 71120, 71960, 130556, 143920, 163195, 228473, 261112, 326390, 456946, 522224, 652780, 913892, 1142365, 1305560, 1827784, 2284730, 2611120, 3655568, 4569460, 9138920, 18277840]

約数ペア:

[(1, 18277840), (2, 9138920), (4, 4569460), (5, 3655568), (7, 2611120), (8, 2284730), (10, 1827784), (14, 1305560), (16, 1142365), (20, 913892), (28, 652780), (35, 522224), (40, 456946), (56, 326390), (70, 261112), (80, 228473), (112, 163195), (127, 143920), (140, 130556), (254, 71960), (257, 71120), (280, 65278), (508, 35980), (514, 35560), (560, 32639), (635, 28784), (889, 20560), (1016, 17990), (1028, 17780), (1270, 14392), (1285, 14224), (1778, 10280), (1799, 10160), (2032, 8995), (2056, 8890), (2540, 7196), (2570, 7112), (3556, 5140), (3598, 5080), (4112, 4445)]