19075185

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 35043840

約数和(自身を除く): 15968655

約数列:

[1, 3, 5, 9, 15, 29, 45, 47, 87, 141, 145, 235, 261, 311, 423, 435, 705, 933, 1305, 1363, 1555, 2115, 2799, 4089, 4665, 6815, 9019, 12267, 13995, 14617, 20445, 27057, 43851, 45095, 61335, 73085, 81171, 131553, 135285, 219255, 405855, 423893, 657765, 1271679, 2119465, 3815037, 6358395, 19075185]

約数ペア:

[(1, 19075185), (3, 6358395), (5, 3815037), (9, 2119465), (15, 1271679), (29, 657765), (45, 423893), (47, 405855), (87, 219255), (141, 135285), (145, 131553), (235, 81171), (261, 73085), (311, 61335), (423, 45095), (435, 43851), (705, 27057), (933, 20445), (1305, 14617), (1363, 13995), (1555, 12267), (2115, 9019), (2799, 6815), (4089, 4665)]