21635320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77269}}^1$

素因数の和:77287

約数の個数: 32

約数和(自身を含む): 55634400

約数和(自身を除く): 33999080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77269, 154538, 309076, 386345, 540883, 618152, 772690, 1081766, 1545380, 2163532, 2704415, 3090760, 4327064, 5408830, 10817660, 21635320]

約数ペア:

[(1, 21635320), (2, 10817660), (4, 5408830), (5, 4327064), (7, 3090760), (8, 2704415), (10, 2163532), (14, 1545380), (20, 1081766), (28, 772690), (35, 618152), (40, 540883), (56, 386345), (70, 309076), (140, 154538), (280, 77269)]