20972935

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1\times {\mathrm{389}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 25945920

約数和(自身を除く): 4972985

約数列:

[1, 5, 41, 205, 263, 389, 1315, 1945, 10783, 15949, 53915, 79745, 102307, 511535, 4194587, 20972935]

約数ペア:

[(1, 20972935), (5, 4194587), (41, 511535), (205, 102307), (263, 79745), (389, 53915), (1315, 15949), (1945, 10783)]