21572000

素因数分解:

$2^5\times 5^3\times {\mathrm{5393}}^1$

素因数の和:5418

約数の個数: 48

約数和(自身を含む): 53012232

約数和(自身を除く): 31440232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 5393, 10786, 21572, 26965, 43144, 53930, 86288, 107860, 134825, 172576, 215720, 269650, 431440, 539300, 674125, 862880, 1078600, 1348250, 2157200, 2696500, 4314400, 5393000, 10786000, 21572000]

約数ペア:

[(1, 21572000), (2, 10786000), (4, 5393000), (5, 4314400), (8, 2696500), (10, 2157200), (16, 1348250), (20, 1078600), (25, 862880), (32, 674125), (40, 539300), (50, 431440), (80, 269650), (100, 215720), (125, 172576), (160, 134825), (200, 107860), (250, 86288), (400, 53930), (500, 43144), (800, 26965), (1000, 21572), (2000, 10786), (4000, 5393)]