256560984

素因数分解:

$2^3\times 3^2\times {\mathrm{181}}^1\times {\mathrm{19687}}^1$

素因数の和:19880

約数の個数: 48

約数和(自身を含む): 698727120

約数和(自身を除く): 442166136

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 181, 362, 543, 724, 1086, 1448, 1629, 2172, 3258, 4344, 6516, 13032, 19687, 39374, 59061, 78748, 118122, 157496, 177183, 236244, 354366, 472488, 708732, 1417464, 3563347, 7126694, 10690041, 14253388, 21380082, 28506776, 32070123, 42760164, 64140246, 85520328, 128280492, 256560984]

約数ペア:

[(1, 256560984), (2, 128280492), (3, 85520328), (4, 64140246), (6, 42760164), (8, 32070123), (9, 28506776), (12, 21380082), (18, 14253388), (24, 10690041), (36, 7126694), (72, 3563347), (181, 1417464), (362, 708732), (543, 472488), (724, 354366), (1086, 236244), (1448, 177183), (1629, 157496), (2172, 118122), (3258, 78748), (4344, 59061), (6516, 39374), (13032, 19687)]