21448395

素因数分解:

$3^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 39137280

約数和(自身を除く): 17688885

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 127, 135, 139, 243, 381, 405, 417, 635, 695, 1143, 1215, 1251, 1905, 2085, 3429, 3753, 5715, 6255, 10287, 11259, 17145, 17653, 18765, 30861, 33777, 51435, 52959, 56295, 88265, 154305, 158877, 168885, 264795, 476631, 794385, 1429893, 2383155, 4289679, 7149465, 21448395]

約数ペア:

[(1, 21448395), (3, 7149465), (5, 4289679), (9, 2383155), (15, 1429893), (27, 794385), (45, 476631), (81, 264795), (127, 168885), (135, 158877), (139, 154305), (243, 88265), (381, 56295), (405, 52959), (417, 51435), (635, 33777), (695, 30861), (1143, 18765), (1215, 17653), (1251, 17145), (1905, 11259), (2085, 10287), (3429, 6255), (3753, 5715)]