20875750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 45527040

約数和(自身を除く): 24651290

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 79, 125, 151, 158, 175, 250, 302, 350, 395, 553, 755, 790, 875, 1057, 1106, 1510, 1750, 1975, 2114, 2765, 3775, 3950, 5285, 5530, 7550, 9875, 10570, 11929, 13825, 18875, 19750, 23858, 26425, 27650, 37750, 52850, 59645, 69125, 83503, 119290, 132125, 138250, 167006, 264250, 298225, 417515, 596450, 835030, 1491125, 2087575, 2982250, 4175150, 10437875, 20875750]

約数ペア:

[(1, 20875750), (2, 10437875), (5, 4175150), (7, 2982250), (10, 2087575), (14, 1491125), (25, 835030), (35, 596450), (50, 417515), (70, 298225), (79, 264250), (125, 167006), (151, 138250), (158, 132125), (175, 119290), (250, 83503), (302, 69125), (350, 59645), (395, 52850), (553, 37750), (755, 27650), (790, 26425), (875, 23858), (1057, 19750), (1106, 18875), (1510, 13825), (1750, 11929), (1975, 10570), (2114, 9875), (2765, 7550), (3775, 5530), (3950, 5285)]