19871055

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 38092800

約数和(自身を除く): 18221745

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 61, 95, 127, 135, 171, 183, 285, 305, 381, 513, 549, 635, 855, 915, 1143, 1159, 1647, 1905, 2413, 2565, 2745, 3429, 3477, 5715, 5795, 7239, 7747, 8235, 10431, 12065, 17145, 17385, 21717, 23241, 31293, 36195, 38735, 52155, 65151, 69723, 108585, 116205, 147193, 156465, 209169, 325755, 348615, 441579, 735965, 1045845, 1324737, 2207895, 3974211, 6623685, 19871055]

約数ペア:

[(1, 19871055), (3, 6623685), (5, 3974211), (9, 2207895), (15, 1324737), (19, 1045845), (27, 735965), (45, 441579), (57, 348615), (61, 325755), (95, 209169), (127, 156465), (135, 147193), (171, 116205), (183, 108585), (285, 69723), (305, 65151), (381, 52155), (513, 38735), (549, 36195), (635, 31293), (855, 23241), (915, 21717), (1143, 17385), (1159, 17145), (1647, 12065), (1905, 10431), (2413, 8235), (2565, 7747), (2745, 7239), (3429, 5795), (3477, 5715)]