19992340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{463}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 44900352

約数和(自身を除く): 24908012

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 127, 170, 254, 340, 463, 508, 635, 926, 1270, 1852, 2159, 2315, 2540, 4318, 4630, 7871, 8636, 9260, 10795, 15742, 21590, 31484, 39355, 43180, 58801, 78710, 117602, 157420, 235204, 294005, 588010, 999617, 1176020, 1999234, 3998468, 4998085, 9996170, 19992340]

約数ペア:

[(1, 19992340), (2, 9996170), (4, 4998085), (5, 3998468), (10, 1999234), (17, 1176020), (20, 999617), (34, 588010), (68, 294005), (85, 235204), (127, 157420), (170, 117602), (254, 78710), (340, 58801), (463, 43180), (508, 39355), (635, 31484), (926, 21590), (1270, 15742), (1852, 10795), (2159, 9260), (2315, 8636), (2540, 7871), (4318, 4630)]