51261520

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8111}}^1$

素因数の和:8203

約数の個数: 40

約数和(自身を含む): 120706560

約数和(自身を除く): 69445040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 8111, 16222, 32444, 40555, 64888, 81110, 129776, 162220, 324440, 640769, 648880, 1281538, 2563076, 3203845, 5126152, 6407690, 10252304, 12815380, 25630760, 51261520]

約数ペア:

[(1, 51261520), (2, 25630760), (4, 12815380), (5, 10252304), (8, 6407690), (10, 5126152), (16, 3203845), (20, 2563076), (40, 1281538), (79, 648880), (80, 640769), (158, 324440), (316, 162220), (395, 129776), (632, 81110), (790, 64888), (1264, 40555), (1580, 32444), (3160, 16222), (6320, 8111)]