19972654

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{619}}^1$

素因数の和:724

約数の個数: 32

約数和(自身を含む): 34685280

約数和(自身を除く): 14712626

約数列:

[1, 2, 13, 17, 26, 34, 73, 146, 221, 442, 619, 949, 1238, 1241, 1898, 2482, 8047, 10523, 16094, 16133, 21046, 32266, 45187, 90374, 136799, 273598, 587431, 768179, 1174862, 1536358, 9986327, 19972654]

約数ペア:

[(1, 19972654), (2, 9986327), (13, 1536358), (17, 1174862), (26, 768179), (34, 587431), (73, 273598), (146, 136799), (221, 90374), (442, 45187), (619, 32266), (949, 21046), (1238, 16133), (1241, 16094), (1898, 10523), (2482, 8047)]