19718188

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2719}}^1$

素因数の和:2774

約数の個数: 36

約数和(自身を含む): 41240640

約数和(自身を除く): 21522452

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 518, 1036, 1813, 2719, 3626, 5438, 7252, 10876, 19033, 38066, 76132, 100603, 133231, 201206, 266462, 402412, 532924, 704221, 1408442, 2816884, 4929547, 9859094, 19718188]

約数ペア:

[(1, 19718188), (2, 9859094), (4, 4929547), (7, 2816884), (14, 1408442), (28, 704221), (37, 532924), (49, 402412), (74, 266462), (98, 201206), (148, 133231), (196, 100603), (259, 76132), (518, 38066), (1036, 19033), (1813, 10876), (2719, 7252), (3626, 5438)]