388701640

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{133117}}^1$

素因数の和:133201

約数の個数: 32

約数和(自身を含む): 886565880

約数和(自身を除く): 497864240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 133117, 266234, 532468, 665585, 1064936, 1331170, 2662340, 5324680, 9717541, 19435082, 38870164, 48587705, 77740328, 97175410, 194350820, 388701640]

約数ペア:

[(1, 388701640), (2, 194350820), (4, 97175410), (5, 77740328), (8, 48587705), (10, 38870164), (20, 19435082), (40, 9717541), (73, 5324680), (146, 2662340), (292, 1331170), (365, 1064936), (584, 665585), (730, 532468), (1460, 266234), (2920, 133117)]