199867905

素因数分解:

$3^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2557}}^1$

素因数の和:2767

約数の個数: 40

約数和(自身を含む): 360278952

約数和(自身を除く): 160411047

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 193, 405, 579, 965, 1737, 2557, 2895, 5211, 7671, 8685, 12785, 15633, 23013, 26055, 38355, 69039, 78165, 115065, 207117, 345195, 493501, 1035585, 1480503, 2467505, 4441509, 7402515, 13324527, 22207545, 39973581, 66622635, 199867905]

約数ペア:

[(1, 199867905), (3, 66622635), (5, 39973581), (9, 22207545), (15, 13324527), (27, 7402515), (45, 4441509), (81, 2467505), (135, 1480503), (193, 1035585), (405, 493501), (579, 345195), (965, 207117), (1737, 115065), (2557, 78165), (2895, 69039), (5211, 38355), (7671, 26055), (8685, 23013), (12785, 15633)]