19806105

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 18514023

約数列:

[1, 3, 5, 11, 15, 17, 23, 33, 51, 55, 69, 85, 115, 165, 187, 253, 255, 307, 345, 391, 561, 759, 921, 935, 1173, 1265, 1535, 1955, 2805, 3377, 3795, 4301, 4605, 5219, 5865, 7061, 10131, 12903, 15657, 16885, 21183, 21505, 26095, 35305, 50655, 57409, 64515, 77671, 78285, 105915, 120037, 172227, 233013, 287045, 360111, 388355, 600185, 861135, 1165065, 1320407, 1800555, 3961221, 6602035, 19806105]

約数ペア:

[(1, 19806105), (3, 6602035), (5, 3961221), (11, 1800555), (15, 1320407), (17, 1165065), (23, 861135), (33, 600185), (51, 388355), (55, 360111), (69, 287045), (85, 233013), (115, 172227), (165, 120037), (187, 105915), (253, 78285), (255, 77671), (307, 64515), (345, 57409), (391, 50655), (561, 35305), (759, 26095), (921, 21505), (935, 21183), (1173, 16885), (1265, 15657), (1535, 12903), (1955, 10131), (2805, 7061), (3377, 5865), (3795, 5219), (4301, 4605)]