12678980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{641}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 28473984

約数和(自身を除く): 15795004

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 641, 860, 989, 1282, 1978, 2564, 3205, 3956, 4945, 6410, 9890, 12820, 14743, 19780, 27563, 29486, 55126, 58972, 73715, 110252, 137815, 147430, 275630, 294860, 551260, 633949, 1267898, 2535796, 3169745, 6339490, 12678980]

約数ペア:

[(1, 12678980), (2, 6339490), (4, 3169745), (5, 2535796), (10, 1267898), (20, 633949), (23, 551260), (43, 294860), (46, 275630), (86, 147430), (92, 137815), (115, 110252), (172, 73715), (215, 58972), (230, 55126), (430, 29486), (460, 27563), (641, 19780), (860, 14743), (989, 12820), (1282, 9890), (1978, 6410), (2564, 4945), (3205, 3956)]