19099990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 42900480

約数和(自身を除く): 23800490

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 139, 151, 182, 278, 302, 455, 695, 755, 910, 973, 1057, 1390, 1510, 1807, 1946, 1963, 2114, 3614, 3926, 4865, 5285, 9035, 9730, 9815, 10570, 12649, 13741, 18070, 19630, 20989, 25298, 27482, 41978, 63245, 68705, 104945, 126490, 137410, 146923, 209890, 272857, 293846, 545714, 734615, 1364285, 1469230, 1909999, 2728570, 3819998, 9549995, 19099990]

約数ペア:

[(1, 19099990), (2, 9549995), (5, 3819998), (7, 2728570), (10, 1909999), (13, 1469230), (14, 1364285), (26, 734615), (35, 545714), (65, 293846), (70, 272857), (91, 209890), (130, 146923), (139, 137410), (151, 126490), (182, 104945), (278, 68705), (302, 63245), (455, 41978), (695, 27482), (755, 25298), (910, 20989), (973, 19630), (1057, 18070), (1390, 13741), (1510, 12649), (1807, 10570), (1946, 9815), (1963, 9730), (2114, 9035), (3614, 5285), (3926, 4865)]