20920760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74717}}^1$

素因数の和:74735

約数の個数: 32

約数和(自身を含む): 53796960

約数和(自身を除く): 32876200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74717, 149434, 298868, 373585, 523019, 597736, 747170, 1046038, 1494340, 2092076, 2615095, 2988680, 4184152, 5230190, 10460380, 20920760]

約数ペア:

[(1, 20920760), (2, 10460380), (4, 5230190), (5, 4184152), (7, 2988680), (8, 2615095), (10, 2092076), (14, 1494340), (20, 1046038), (28, 747170), (35, 597736), (40, 523019), (56, 373585), (70, 298868), (140, 149434), (280, 74717)]