13019721

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 21450240

約数和(自身を除く): 8430519

約数列:

[1, 3, 11, 13, 31, 33, 39, 89, 93, 121, 143, 267, 341, 363, 403, 429, 979, 1023, 1157, 1209, 1573, 2759, 2937, 3471, 3751, 4433, 4719, 8277, 10769, 11253, 12727, 13299, 30349, 32307, 35867, 38181, 48763, 91047, 107601, 139997, 146289, 333839, 394537, 419991, 1001517, 1183611, 4339907, 13019721]

約数ペア:

[(1, 13019721), (3, 4339907), (11, 1183611), (13, 1001517), (31, 419991), (33, 394537), (39, 333839), (89, 146289), (93, 139997), (121, 107601), (143, 91047), (267, 48763), (341, 38181), (363, 35867), (403, 32307), (429, 30349), (979, 13299), (1023, 12727), (1157, 11253), (1209, 10769), (1573, 8277), (2759, 4719), (2937, 4433), (3471, 3751)]