19401290

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:634

約数の個数: 32

約数和(自身を含む): 36450000

約数和(自身を除く): 17048710

約数列:

[1, 2, 5, 10, 29, 58, 145, 149, 290, 298, 449, 745, 898, 1490, 2245, 4321, 4490, 8642, 13021, 21605, 26042, 43210, 65105, 66901, 130210, 133802, 334505, 669010, 1940129, 3880258, 9700645, 19401290]

約数ペア:

[(1, 19401290), (2, 9700645), (5, 3880258), (10, 1940129), (29, 669010), (58, 334505), (145, 133802), (149, 130210), (290, 66901), (298, 65105), (449, 43210), (745, 26042), (898, 21605), (1490, 13021), (2245, 8642), (4321, 4490)]