20191509

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{293}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 34245120

約数和(自身を除く): 14053611

約数列:

[1, 3, 9, 13, 19, 31, 39, 57, 93, 117, 171, 247, 279, 293, 403, 589, 741, 879, 1209, 1767, 2223, 2637, 3627, 3809, 5301, 5567, 7657, 9083, 11427, 16701, 22971, 27249, 34281, 50103, 68913, 72371, 81747, 118079, 172577, 217113, 354237, 517731, 651339, 1062711, 1553193, 2243501, 6730503, 20191509]

約数ペア:

[(1, 20191509), (3, 6730503), (9, 2243501), (13, 1553193), (19, 1062711), (31, 651339), (39, 517731), (57, 354237), (93, 217113), (117, 172577), (171, 118079), (247, 81747), (279, 72371), (293, 68913), (403, 50103), (589, 34281), (741, 27249), (879, 22971), (1209, 16701), (1767, 11427), (2223, 9083), (2637, 7657), (3627, 5567), (3809, 5301)]