80818900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{13249}}^1$

素因数の和:13324

約数の個数: 36

約数和(自身を含む): 178265500

約数和(自身を除く): 97446600

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 6100, 13249, 26498, 52996, 66245, 132490, 264980, 331225, 662450, 808189, 1324900, 1616378, 3232756, 4040945, 8081890, 16163780, 20204725, 40409450, 80818900]

約数ペア:

[(1, 80818900), (2, 40409450), (4, 20204725), (5, 16163780), (10, 8081890), (20, 4040945), (25, 3232756), (50, 1616378), (61, 1324900), (100, 808189), (122, 662450), (244, 331225), (305, 264980), (610, 132490), (1220, 66245), (1525, 52996), (3050, 26498), (6100, 13249)]