19394505

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 38142720

約数和(自身を除く): 18748215

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 43, 45, 65, 117, 129, 135, 195, 215, 257, 351, 387, 559, 585, 645, 771, 1161, 1285, 1677, 1755, 1935, 2313, 2795, 3341, 3855, 5031, 5805, 6939, 8385, 10023, 11051, 11565, 15093, 16705, 25155, 30069, 33153, 34695, 50115, 55255, 75465, 90207, 99459, 143663, 150345, 165765, 298377, 430989, 451035, 497295, 718315, 1292967, 1491885, 2154945, 3878901, 6464835, 19394505]

約数ペア:

[(1, 19394505), (3, 6464835), (5, 3878901), (9, 2154945), (13, 1491885), (15, 1292967), (27, 718315), (39, 497295), (43, 451035), (45, 430989), (65, 298377), (117, 165765), (129, 150345), (135, 143663), (195, 99459), (215, 90207), (257, 75465), (351, 55255), (387, 50115), (559, 34695), (585, 33153), (645, 30069), (771, 25155), (1161, 16705), (1285, 15093), (1677, 11565), (1755, 11051), (1935, 10023), (2313, 8385), (2795, 6939), (3341, 5805), (3855, 5031)]