20560120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{757}}^1$

素因数の和:872

約数の個数: 64

約数和(自身を含む): 53484480

約数和(自身を除く): 32924360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 97, 140, 194, 280, 388, 485, 679, 757, 776, 970, 1358, 1514, 1940, 2716, 3028, 3395, 3785, 3880, 5299, 5432, 6056, 6790, 7570, 10598, 13580, 15140, 21196, 26495, 27160, 30280, 42392, 52990, 73429, 105980, 146858, 211960, 293716, 367145, 514003, 587432, 734290, 1028006, 1468580, 2056012, 2570015, 2937160, 4112024, 5140030, 10280060, 20560120]

約数ペア:

[(1, 20560120), (2, 10280060), (4, 5140030), (5, 4112024), (7, 2937160), (8, 2570015), (10, 2056012), (14, 1468580), (20, 1028006), (28, 734290), (35, 587432), (40, 514003), (56, 367145), (70, 293716), (97, 211960), (140, 146858), (194, 105980), (280, 73429), (388, 52990), (485, 42392), (679, 30280), (757, 27160), (776, 26495), (970, 21196), (1358, 15140), (1514, 13580), (1940, 10598), (2716, 7570), (3028, 6790), (3395, 6056), (3785, 5432), (3880, 5299)]