20816300

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 47663616

約数和(自身を除く): 26847316

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 47, 50, 86, 94, 100, 103, 172, 188, 206, 215, 235, 412, 430, 470, 515, 860, 940, 1030, 1075, 1175, 2021, 2060, 2150, 2350, 2575, 4042, 4300, 4429, 4700, 4841, 5150, 8084, 8858, 9682, 10105, 10300, 17716, 19364, 20210, 22145, 24205, 40420, 44290, 48410, 50525, 88580, 96820, 101050, 110725, 121025, 202100, 208163, 221450, 242050, 416326, 442900, 484100, 832652, 1040815, 2081630, 4163260, 5204075, 10408150, 20816300]

約数ペア:

[(1, 20816300), (2, 10408150), (4, 5204075), (5, 4163260), (10, 2081630), (20, 1040815), (25, 832652), (43, 484100), (47, 442900), (50, 416326), (86, 242050), (94, 221450), (100, 208163), (103, 202100), (172, 121025), (188, 110725), (206, 101050), (215, 96820), (235, 88580), (412, 50525), (430, 48410), (470, 44290), (515, 40420), (860, 24205), (940, 22145), (1030, 20210), (1075, 19364), (1175, 17716), (2021, 10300), (2060, 10105), (2150, 9682), (2350, 8858), (2575, 8084), (4042, 5150), (4300, 4841), (4429, 4700)]