20561870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1447}}^1$

素因数の和:1497

約数の個数: 48

約数和(自身を含む): 44569440

約数和(自身を除く): 24007570

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 203, 245, 290, 406, 490, 1015, 1421, 1447, 2030, 2842, 2894, 7105, 7235, 10129, 14210, 14470, 20258, 41963, 50645, 70903, 83926, 101290, 141806, 209815, 293741, 354515, 419630, 587482, 709030, 1468705, 2056187, 2937410, 4112374, 10280935, 20561870]

約数ペア:

[(1, 20561870), (2, 10280935), (5, 4112374), (7, 2937410), (10, 2056187), (14, 1468705), (29, 709030), (35, 587482), (49, 419630), (58, 354515), (70, 293741), (98, 209815), (145, 141806), (203, 101290), (245, 83926), (290, 70903), (406, 50645), (490, 41963), (1015, 20258), (1421, 14470), (1447, 14210), (2030, 10129), (2842, 7235), (2894, 7105)]