12589240

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{641}}^1$

素因数の和:1143

約数の個数: 32

約数和(自身を含む): 28427760

約数和(自身を除く): 15838520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 641, 982, 1282, 1964, 2455, 2564, 3205, 3928, 4910, 5128, 6410, 9820, 12820, 19640, 25640, 314731, 629462, 1258924, 1573655, 2517848, 3147310, 6294620, 12589240]

約数ペア:

[(1, 12589240), (2, 6294620), (4, 3147310), (5, 2517848), (8, 1573655), (10, 1258924), (20, 629462), (40, 314731), (491, 25640), (641, 19640), (982, 12820), (1282, 9820), (1964, 6410), (2455, 5128), (2564, 4910), (3205, 3928)]