19509399

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 36599472

約数和(自身を除く): 17090073

約数列:

[1, 3, 7, 9, 13, 21, 39, 41, 49, 63, 83, 91, 117, 123, 147, 249, 273, 287, 369, 441, 533, 581, 637, 747, 819, 861, 1079, 1599, 1743, 1911, 2009, 2583, 3237, 3403, 3731, 4067, 4797, 5229, 5733, 6027, 7553, 9711, 10209, 11193, 12201, 18081, 22659, 23821, 26117, 30627, 33579, 36603, 44239, 52871, 67977, 71463, 78351, 132717, 158613, 166747, 214389, 235053, 309673, 398151, 475839, 500241, 929019, 1500723, 2167711, 2787057, 6503133, 19509399]

約数ペア:

[(1, 19509399), (3, 6503133), (7, 2787057), (9, 2167711), (13, 1500723), (21, 929019), (39, 500241), (41, 475839), (49, 398151), (63, 309673), (83, 235053), (91, 214389), (117, 166747), (123, 158613), (147, 132717), (249, 78351), (273, 71463), (287, 67977), (369, 52871), (441, 44239), (533, 36603), (581, 33579), (637, 30627), (747, 26117), (819, 23821), (861, 22659), (1079, 18081), (1599, 12201), (1743, 11193), (1911, 10209), (2009, 9711), (2583, 7553), (3237, 6027), (3403, 5733), (3731, 5229), (4067, 4797)]