51090820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{439}}^1$

素因数の和:505

約数の個数: 72

約数和(自身を含む): 122633280

約数和(自身を除く): 71542460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 439, 460, 506, 529, 878, 1012, 1058, 1265, 1756, 2116, 2195, 2530, 2645, 4390, 4829, 5060, 5290, 5819, 8780, 9658, 10097, 10580, 11638, 19316, 20194, 23276, 24145, 29095, 40388, 48290, 50485, 58190, 96580, 100970, 111067, 116380, 201940, 222134, 232231, 444268, 464462, 555335, 928924, 1110670, 1161155, 2221340, 2322310, 2554541, 4644620, 5109082, 10218164, 12772705, 25545410, 51090820]

約数ペア:

[(1, 51090820), (2, 25545410), (4, 12772705), (5, 10218164), (10, 5109082), (11, 4644620), (20, 2554541), (22, 2322310), (23, 2221340), (44, 1161155), (46, 1110670), (55, 928924), (92, 555335), (110, 464462), (115, 444268), (220, 232231), (230, 222134), (253, 201940), (439, 116380), (460, 111067), (506, 100970), (529, 96580), (878, 58190), (1012, 50485), (1058, 48290), (1265, 40388), (1756, 29095), (2116, 24145), (2195, 23276), (2530, 20194), (2645, 19316), (4390, 11638), (4829, 10580), (5060, 10097), (5290, 9658), (5819, 8780)]