19795568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5009}}^1$

素因数の和:5049

約数の個数: 40

約数和(自身を含む): 43486800

約数和(自身を除く): 23691232

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5009, 10018, 20036, 40072, 65117, 80144, 95171, 130234, 190342, 260468, 380684, 520936, 761368, 1041872, 1237223, 1522736, 2474446, 4948892, 9897784, 19795568]

約数ペア:

[(1, 19795568), (2, 9897784), (4, 4948892), (8, 2474446), (13, 1522736), (16, 1237223), (19, 1041872), (26, 761368), (38, 520936), (52, 380684), (76, 260468), (104, 190342), (152, 130234), (208, 95171), (247, 80144), (304, 65117), (494, 40072), (988, 20036), (1976, 10018), (3952, 5009)]