18859520

素因数分解:

$2^9\times 5^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:215

約数の個数: 80

約数和(自身を含む): 46403280

約数和(自身を除く): 27543760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 139, 160, 212, 256, 265, 278, 320, 424, 512, 530, 556, 640, 695, 848, 1060, 1112, 1280, 1390, 1696, 2120, 2224, 2560, 2780, 3392, 4240, 4448, 5560, 6784, 7367, 8480, 8896, 11120, 13568, 14734, 16960, 17792, 22240, 27136, 29468, 33920, 35584, 36835, 44480, 58936, 67840, 71168, 73670, 88960, 117872, 135680, 147340, 177920, 235744, 294680, 355840, 471488, 589360, 942976, 1178720, 1885952, 2357440, 3771904, 4714880, 9429760, 18859520]

約数ペア:

[(1, 18859520), (2, 9429760), (4, 4714880), (5, 3771904), (8, 2357440), (10, 1885952), (16, 1178720), (20, 942976), (32, 589360), (40, 471488), (53, 355840), (64, 294680), (80, 235744), (106, 177920), (128, 147340), (139, 135680), (160, 117872), (212, 88960), (256, 73670), (265, 71168), (278, 67840), (320, 58936), (424, 44480), (512, 36835), (530, 35584), (556, 33920), (640, 29468), (695, 27136), (848, 22240), (1060, 17792), (1112, 16960), (1280, 14734), (1390, 13568), (1696, 11120), (2120, 8896), (2224, 8480), (2560, 7367), (2780, 6784), (3392, 5560), (4240, 4448)]