668846878

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:517

約数の個数: 64

約数和(自身を含む): 1244066688

約数和(自身を除く): 575219810

約数列:

[1, 2, 7, 14, 17, 34, 73, 119, 137, 146, 238, 274, 281, 511, 562, 959, 1022, 1241, 1918, 1967, 2329, 2482, 3934, 4658, 4777, 8687, 9554, 10001, 16303, 17374, 20002, 20513, 32606, 33439, 38497, 41026, 66878, 70007, 76994, 140014, 143591, 170017, 269479, 287182, 340034, 348721, 538958, 654449, 697442, 1190119, 1308898, 2380238, 2441047, 2810281, 4581143, 4882094, 5620562, 9162286, 19671967, 39343934, 47774777, 95549554, 334423439, 668846878]

約数ペア:

[(1, 668846878), (2, 334423439), (7, 95549554), (14, 47774777), (17, 39343934), (34, 19671967), (73, 9162286), (119, 5620562), (137, 4882094), (146, 4581143), (238, 2810281), (274, 2441047), (281, 2380238), (511, 1308898), (562, 1190119), (959, 697442), (1022, 654449), (1241, 538958), (1918, 348721), (1967, 340034), (2329, 287182), (2482, 269479), (3934, 170017), (4658, 143591), (4777, 140014), (8687, 76994), (9554, 70007), (10001, 66878), (16303, 41026), (17374, 38497), (20002, 33439), (20513, 32606)]