21652520

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{5059}}^1$

素因数の和:5177

約数の個数: 32

約数和(自身を含む): 49183200

約数和(自身を除く): 27530680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 5059, 10118, 20236, 25295, 40472, 50590, 101180, 202360, 541313, 1082626, 2165252, 2706565, 4330504, 5413130, 10826260, 21652520]

約数ペア:

[(1, 21652520), (2, 10826260), (4, 5413130), (5, 4330504), (8, 2706565), (10, 2165252), (20, 1082626), (40, 541313), (107, 202360), (214, 101180), (428, 50590), (535, 40472), (856, 25295), (1070, 20236), (2140, 10118), (4280, 5059)]