19779210

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19979}}^1$

素因数の和:20003

約数の個数: 48

約数和(自身を含む): 56103840

約数和(自身を除く): 36324630

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 19979, 39958, 59937, 99895, 119874, 179811, 199790, 219769, 299685, 359622, 439538, 599370, 659307, 899055, 1098845, 1318614, 1798110, 1977921, 2197690, 3296535, 3955842, 6593070, 9889605, 19779210]

約数ペア:

[(1, 19779210), (2, 9889605), (3, 6593070), (5, 3955842), (6, 3296535), (9, 2197690), (10, 1977921), (11, 1798110), (15, 1318614), (18, 1098845), (22, 899055), (30, 659307), (33, 599370), (45, 439538), (55, 359622), (66, 299685), (90, 219769), (99, 199790), (110, 179811), (165, 119874), (198, 99895), (330, 59937), (495, 39958), (990, 19979)]