19491990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{919}}^1$

素因数の和:1037

約数の個数: 64

約数和(自身を含む): 54051840

約数和(自身を除く): 34559850

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 101, 105, 202, 210, 303, 505, 606, 707, 919, 1010, 1414, 1515, 1838, 2121, 2757, 3030, 3535, 4242, 4595, 5514, 6433, 7070, 9190, 10605, 12866, 13785, 19299, 21210, 27570, 32165, 38598, 64330, 92819, 96495, 185638, 192990, 278457, 464095, 556914, 649733, 928190, 1299466, 1392285, 1949199, 2784570, 3248665, 3898398, 6497330, 9745995, 19491990]

約数ペア:

[(1, 19491990), (2, 9745995), (3, 6497330), (5, 3898398), (6, 3248665), (7, 2784570), (10, 1949199), (14, 1392285), (15, 1299466), (21, 928190), (30, 649733), (35, 556914), (42, 464095), (70, 278457), (101, 192990), (105, 185638), (202, 96495), (210, 92819), (303, 64330), (505, 38598), (606, 32165), (707, 27570), (919, 21210), (1010, 19299), (1414, 13785), (1515, 12866), (1838, 10605), (2121, 9190), (2757, 7070), (3030, 6433), (3535, 5514), (4242, 4595)]