668889338

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{31489}}^1$

素因数の和:31566

約数の個数: 32

約数和(自身を含む): 1163870400

約数和(自身を除く): 494981062

約数列:

[1, 2, 13, 19, 26, 38, 43, 86, 247, 494, 559, 817, 1118, 1634, 10621, 21242, 31489, 62978, 409357, 598291, 818714, 1196582, 1354027, 2708054, 7777783, 15555566, 17602351, 25726513, 35204702, 51453026, 334444669, 668889338]

約数ペア:

[(1, 668889338), (2, 334444669), (13, 51453026), (19, 35204702), (26, 25726513), (38, 17602351), (43, 15555566), (86, 7777783), (247, 2708054), (494, 1354027), (559, 1196582), (817, 818714), (1118, 598291), (1634, 409357), (10621, 62978), (21242, 31489)]