21650785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{373}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 30159360

約数和(自身を除く): 8508575

約数列:

[1, 5, 13, 19, 47, 65, 95, 235, 247, 373, 611, 893, 1235, 1865, 3055, 4465, 4849, 7087, 11609, 17531, 24245, 35435, 58045, 87655, 92131, 227903, 333089, 460655, 1139515, 1665445, 4330157, 21650785]

約数ペア:

[(1, 21650785), (5, 4330157), (13, 1665445), (19, 1139515), (47, 460655), (65, 333089), (95, 227903), (235, 92131), (247, 87655), (373, 58045), (611, 35435), (893, 24245), (1235, 17531), (1865, 11609), (3055, 7087), (4465, 4849)]