245960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:78

約数の個数: 64

約数和(自身を含む): 665280

約数和(自身を除く): 419320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 43, 44, 52, 55, 65, 86, 88, 104, 110, 130, 143, 172, 215, 220, 260, 286, 344, 430, 440, 473, 520, 559, 572, 715, 860, 946, 1118, 1144, 1430, 1720, 1892, 2236, 2365, 2795, 2860, 3784, 4472, 4730, 5590, 5720, 6149, 9460, 11180, 12298, 18920, 22360, 24596, 30745, 49192, 61490, 122980, 245960]

約数ペア:

[(1, 245960), (2, 122980), (4, 61490), (5, 49192), (8, 30745), (10, 24596), (11, 22360), (13, 18920), (20, 12298), (22, 11180), (26, 9460), (40, 6149), (43, 5720), (44, 5590), (52, 4730), (55, 4472), (65, 3784), (86, 2860), (88, 2795), (104, 2365), (110, 2236), (130, 1892), (143, 1720), (172, 1430), (215, 1144), (220, 1118), (260, 946), (286, 860), (344, 715), (430, 572), (440, 559), (473, 520)]