20770240

素因数分解:

$2^6\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1381}}^1$

素因数の和:1445

約数の個数: 56

約数和(自身を含む): 50548032

約数和(自身を除く): 29777792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 160, 188, 235, 320, 376, 470, 752, 940, 1381, 1504, 1880, 2762, 3008, 3760, 5524, 6905, 7520, 11048, 13810, 15040, 22096, 27620, 44192, 55240, 64907, 88384, 110480, 129814, 220960, 259628, 324535, 441920, 519256, 649070, 1038512, 1298140, 2077024, 2596280, 4154048, 5192560, 10385120, 20770240]

約数ペア:

[(1, 20770240), (2, 10385120), (4, 5192560), (5, 4154048), (8, 2596280), (10, 2077024), (16, 1298140), (20, 1038512), (32, 649070), (40, 519256), (47, 441920), (64, 324535), (80, 259628), (94, 220960), (160, 129814), (188, 110480), (235, 88384), (320, 64907), (376, 55240), (470, 44192), (752, 27620), (940, 22096), (1381, 15040), (1504, 13810), (1880, 11048), (2762, 7520), (3008, 6905), (3760, 5524)]