19719855

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:142

約数の個数: 80

約数和(自身を含む): 38681280

約数和(自身を除く): 18961425

約数列:

[1, 3, 5, 9, 15, 23, 27, 29, 45, 69, 73, 81, 87, 115, 135, 145, 207, 219, 261, 345, 365, 405, 435, 621, 657, 667, 783, 1035, 1095, 1305, 1679, 1863, 1971, 2001, 2117, 2349, 3105, 3285, 3335, 3915, 5037, 5913, 6003, 6351, 8395, 9315, 9855, 10005, 10585, 11745, 15111, 18009, 19053, 25185, 29565, 30015, 31755, 45333, 48691, 54027, 57159, 75555, 90045, 95265, 135999, 146073, 171477, 226665, 243455, 270135, 285795, 438219, 679995, 730365, 857385, 1314657, 2191095, 3943971, 6573285, 19719855]

約数ペア:

[(1, 19719855), (3, 6573285), (5, 3943971), (9, 2191095), (15, 1314657), (23, 857385), (27, 730365), (29, 679995), (45, 438219), (69, 285795), (73, 270135), (81, 243455), (87, 226665), (115, 171477), (135, 146073), (145, 135999), (207, 95265), (219, 90045), (261, 75555), (345, 57159), (365, 54027), (405, 48691), (435, 45333), (621, 31755), (657, 30015), (667, 29565), (783, 25185), (1035, 19053), (1095, 18009), (1305, 15111), (1679, 11745), (1863, 10585), (1971, 10005), (2001, 9855), (2117, 9315), (2349, 8395), (3105, 6351), (3285, 6003), (3335, 5913), (3915, 5037)]