72542820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{172721}}^1$

素因数の和:172740

約数の個数: 48

約数和(自身を含む): 232138368

約数和(自身を除く): 159595548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 172721, 345442, 518163, 690884, 863605, 1036326, 1209047, 1727210, 2072652, 2418094, 2590815, 3454420, 3627141, 4836188, 5181630, 6045235, 7254282, 10363260, 12090470, 14508564, 18135705, 24180940, 36271410, 72542820]

約数ペア:

[(1, 72542820), (2, 36271410), (3, 24180940), (4, 18135705), (5, 14508564), (6, 12090470), (7, 10363260), (10, 7254282), (12, 6045235), (14, 5181630), (15, 4836188), (20, 3627141), (21, 3454420), (28, 2590815), (30, 2418094), (35, 2072652), (42, 1727210), (60, 1209047), (70, 1036326), (84, 863605), (105, 690884), (140, 518163), (210, 345442), (420, 172721)]