20090320

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2347}}^1$

素因数の和:2467

約数の個数: 40

約数和(自身を含む): 47166624

約数和(自身を除く): 27076304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2347, 4280, 4694, 8560, 9388, 11735, 18776, 23470, 37552, 46940, 93880, 187760, 251129, 502258, 1004516, 1255645, 2009032, 2511290, 4018064, 5022580, 10045160, 20090320]

約数ペア:

[(1, 20090320), (2, 10045160), (4, 5022580), (5, 4018064), (8, 2511290), (10, 2009032), (16, 1255645), (20, 1004516), (40, 502258), (80, 251129), (107, 187760), (214, 93880), (428, 46940), (535, 37552), (856, 23470), (1070, 18776), (1712, 11735), (2140, 9388), (2347, 8560), (4280, 4694)]