21447656

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{947}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 42660000

約数和(自身を除く): 21212344

約数列:

[1, 2, 4, 8, 19, 38, 76, 149, 152, 298, 596, 947, 1192, 1894, 2831, 3788, 5662, 7576, 11324, 17993, 22648, 35986, 71972, 141103, 143944, 282206, 564412, 1128824, 2680957, 5361914, 10723828, 21447656]

約数ペア:

[(1, 21447656), (2, 10723828), (4, 5361914), (8, 2680957), (19, 1128824), (38, 564412), (76, 282206), (149, 143944), (152, 141103), (298, 71972), (596, 35986), (947, 22648), (1192, 17993), (1894, 11324), (2831, 7576), (3788, 5662)]