21045297

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{607}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 34865152

約数和(自身を除く): 13819855

約数列:

[1, 3, 7, 13, 21, 39, 91, 127, 273, 381, 607, 889, 1651, 1821, 2667, 4249, 4953, 7891, 11557, 12747, 23673, 34671, 55237, 77089, 165711, 231267, 539623, 1002157, 1618869, 3006471, 7015099, 21045297]

約数ペア:

[(1, 21045297), (3, 7015099), (7, 3006471), (13, 1618869), (21, 1002157), (39, 539623), (91, 231267), (127, 165711), (273, 77089), (381, 55237), (607, 34671), (889, 23673), (1651, 12747), (1821, 11557), (2667, 7891), (4249, 4953)]