18420080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:191

約数の個数: 120

約数和(自身を含む): 51568128

約数和(自身を除く): 33148048

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 49, 56, 70, 74, 80, 98, 112, 127, 140, 148, 185, 196, 245, 254, 259, 280, 296, 370, 392, 490, 508, 518, 560, 592, 635, 740, 784, 889, 980, 1016, 1036, 1270, 1295, 1480, 1778, 1813, 1960, 2032, 2072, 2540, 2590, 2960, 3556, 3626, 3920, 4144, 4445, 4699, 5080, 5180, 6223, 7112, 7252, 8890, 9065, 9398, 10160, 10360, 12446, 14224, 14504, 17780, 18130, 18796, 20720, 23495, 24892, 29008, 31115, 32893, 35560, 36260, 37592, 46990, 49784, 62230, 65786, 71120, 72520, 75184, 93980, 99568, 124460, 131572, 145040, 164465, 187960, 230251, 248920, 263144, 328930, 375920, 460502, 497840, 526288, 657860, 921004, 1151255, 1315720, 1842008, 2302510, 2631440, 3684016, 4605020, 9210040, 18420080]

約数ペア:

[(1, 18420080), (2, 9210040), (4, 4605020), (5, 3684016), (7, 2631440), (8, 2302510), (10, 1842008), (14, 1315720), (16, 1151255), (20, 921004), (28, 657860), (35, 526288), (37, 497840), (40, 460502), (49, 375920), (56, 328930), (70, 263144), (74, 248920), (80, 230251), (98, 187960), (112, 164465), (127, 145040), (140, 131572), (148, 124460), (185, 99568), (196, 93980), (245, 75184), (254, 72520), (259, 71120), (280, 65786), (296, 62230), (370, 49784), (392, 46990), (490, 37592), (508, 36260), (518, 35560), (560, 32893), (592, 31115), (635, 29008), (740, 24892), (784, 23495), (889, 20720), (980, 18796), (1016, 18130), (1036, 17780), (1270, 14504), (1295, 14224), (1480, 12446), (1778, 10360), (1813, 10160), (1960, 9398), (2032, 9065), (2072, 8890), (2540, 7252), (2590, 7112), (2960, 6223), (3556, 5180), (3626, 5080), (3920, 4699), (4144, 4445)]