20115400

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2339}}^1$

素因数の和:2398

約数の個数: 48

約数和(自身を含む): 47876400

約数和(自身を除く): 27761000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 2339, 4300, 4678, 8600, 9356, 11695, 18712, 23390, 46780, 58475, 93560, 100577, 116950, 201154, 233900, 402308, 467800, 502885, 804616, 1005770, 2011540, 2514425, 4023080, 5028850, 10057700, 20115400]

約数ペア:

[(1, 20115400), (2, 10057700), (4, 5028850), (5, 4023080), (8, 2514425), (10, 2011540), (20, 1005770), (25, 804616), (40, 502885), (43, 467800), (50, 402308), (86, 233900), (100, 201154), (172, 116950), (200, 100577), (215, 93560), (344, 58475), (430, 46780), (860, 23390), (1075, 18712), (1720, 11695), (2150, 9356), (2339, 8600), (4300, 4678)]