20263280

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1051}}^1$

素因数の和:1305

約数の個数: 40

約数和(自身を含む): 47352624

約数和(自身を除く): 27089344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1051, 1205, 1928, 2102, 2410, 3856, 4204, 4820, 5255, 8408, 9640, 10510, 16816, 19280, 21020, 42040, 84080, 253291, 506582, 1013164, 1266455, 2026328, 2532910, 4052656, 5065820, 10131640, 20263280]

約数ペア:

[(1, 20263280), (2, 10131640), (4, 5065820), (5, 4052656), (8, 2532910), (10, 2026328), (16, 1266455), (20, 1013164), (40, 506582), (80, 253291), (241, 84080), (482, 42040), (964, 21020), (1051, 19280), (1205, 16816), (1928, 10510), (2102, 9640), (2410, 8408), (3856, 5255), (4204, 4820)]