19770795

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3631}}^1$

素因数の和:3664

約数の個数: 36

約数和(自身を含む): 37678368

約数和(自身を除く): 17907573

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 3631, 5445, 10893, 18155, 32679, 39941, 54465, 119823, 163395, 199705, 359469, 439351, 599115, 1318053, 1797345, 2196755, 3954159, 6590265, 19770795]

約数ペア:

[(1, 19770795), (3, 6590265), (5, 3954159), (9, 2196755), (11, 1797345), (15, 1318053), (33, 599115), (45, 439351), (55, 359469), (99, 199705), (121, 163395), (165, 119823), (363, 54465), (495, 39941), (605, 32679), (1089, 18155), (1815, 10893), (3631, 5445)]