19671639

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 10132905

約数列:

[1, 3, 13, 31, 39, 53, 93, 159, 307, 403, 689, 921, 1209, 1643, 2067, 3991, 4929, 9517, 11973, 16271, 21359, 28551, 48813, 64077, 123721, 211523, 371163, 504401, 634569, 1513203, 6557213, 19671639]

約数ペア:

[(1, 19671639), (3, 6557213), (13, 1513203), (31, 634569), (39, 504401), (53, 371163), (93, 211523), (159, 123721), (307, 64077), (403, 48813), (689, 28551), (921, 21359), (1209, 16271), (1643, 11973), (2067, 9517), (3991, 4929)]