21197397

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 10736043

約数列:

[1, 3, 13, 31, 39, 89, 93, 197, 267, 403, 591, 1157, 1209, 2561, 2759, 3471, 6107, 7683, 8277, 17533, 18321, 35867, 52599, 79391, 107601, 227929, 238173, 543523, 683787, 1630569, 7065799, 21197397]

約数ペア:

[(1, 21197397), (3, 7065799), (13, 1630569), (31, 683787), (39, 543523), (89, 238173), (93, 227929), (197, 107601), (267, 79391), (403, 52599), (591, 35867), (1157, 18321), (1209, 17533), (2561, 8277), (2759, 7683), (3471, 6107)]