19960563

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{239}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 11650317

約数列:

[1, 3, 7, 21, 41, 97, 123, 239, 287, 291, 679, 717, 861, 1673, 2037, 3977, 5019, 9799, 11931, 23183, 27839, 29397, 68593, 69549, 83517, 162281, 205779, 486843, 950503, 2851509, 6653521, 19960563]

約数ペア:

[(1, 19960563), (3, 6653521), (7, 2851509), (21, 950503), (41, 486843), (97, 205779), (123, 162281), (239, 83517), (287, 69549), (291, 68593), (679, 29397), (717, 27839), (861, 23183), (1673, 11931), (2037, 9799), (3977, 5019)]