19216505

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:150

約数の個数: 64

約数和(自身を含む): 31518720

約数和(自身を除く): 12302215

約数列:

[1, 5, 7, 11, 19, 35, 37, 55, 71, 77, 95, 133, 185, 209, 259, 355, 385, 407, 497, 665, 703, 781, 1045, 1295, 1349, 1463, 2035, 2485, 2627, 2849, 3515, 3905, 4921, 5467, 6745, 7315, 7733, 9443, 13135, 14245, 14839, 18389, 24605, 27335, 28897, 38665, 47215, 49913, 54131, 74195, 91945, 103873, 144485, 202279, 249565, 270655, 349391, 519365, 549043, 1011395, 1746955, 2745215, 3843301, 19216505]

約数ペア:

[(1, 19216505), (5, 3843301), (7, 2745215), (11, 1746955), (19, 1011395), (35, 549043), (37, 519365), (55, 349391), (71, 270655), (77, 249565), (95, 202279), (133, 144485), (185, 103873), (209, 91945), (259, 74195), (355, 54131), (385, 49913), (407, 47215), (497, 38665), (665, 28897), (703, 27335), (781, 24605), (1045, 18389), (1295, 14839), (1349, 14245), (1463, 13135), (2035, 9443), (2485, 7733), (2627, 7315), (2849, 6745), (3515, 5467), (3905, 4921)]