20357320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12413}}^1$

素因数の和:12465

約数の個数: 32

約数和(自身を含む): 46924920

約数和(自身を除く): 26567600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12413, 24826, 49652, 62065, 99304, 124130, 248260, 496520, 508933, 1017866, 2035732, 2544665, 4071464, 5089330, 10178660, 20357320]

約数ペア:

[(1, 20357320), (2, 10178660), (4, 5089330), (5, 4071464), (8, 2544665), (10, 2035732), (20, 1017866), (40, 508933), (41, 496520), (82, 248260), (164, 124130), (205, 99304), (328, 62065), (410, 49652), (820, 24826), (1640, 12413)]