21570920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1879}}^1$

素因数の和:1938

約数の個数: 64

約数和(自身を含む): 56851200

約数和(自身を除く): 35280280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 1879, 2296, 2870, 3758, 5740, 7516, 9395, 11480, 13153, 15032, 18790, 26306, 37580, 52612, 65765, 75160, 77039, 105224, 131530, 154078, 263060, 308156, 385195, 526120, 539273, 616312, 770390, 1078546, 1540780, 2157092, 2696365, 3081560, 4314184, 5392730, 10785460, 21570920]

約数ペア:

[(1, 21570920), (2, 10785460), (4, 5392730), (5, 4314184), (7, 3081560), (8, 2696365), (10, 2157092), (14, 1540780), (20, 1078546), (28, 770390), (35, 616312), (40, 539273), (41, 526120), (56, 385195), (70, 308156), (82, 263060), (140, 154078), (164, 131530), (205, 105224), (280, 77039), (287, 75160), (328, 65765), (410, 52612), (574, 37580), (820, 26306), (1148, 18790), (1435, 15032), (1640, 13153), (1879, 11480), (2296, 9395), (2870, 7516), (3758, 5740)]