28157805

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{379}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 53114880

約数和(自身を除く): 24957075

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 127, 195, 379, 381, 585, 635, 1137, 1143, 1651, 1895, 1905, 3411, 4927, 4953, 5685, 5715, 8255, 14781, 14859, 17055, 24635, 24765, 44343, 48133, 73905, 74295, 144399, 221715, 240665, 433197, 625729, 721995, 1877187, 2165985, 3128645, 5631561, 9385935, 28157805]

約数ペア:

[(1, 28157805), (3, 9385935), (5, 5631561), (9, 3128645), (13, 2165985), (15, 1877187), (39, 721995), (45, 625729), (65, 433197), (117, 240665), (127, 221715), (195, 144399), (379, 74295), (381, 73905), (585, 48133), (635, 44343), (1137, 24765), (1143, 24635), (1651, 17055), (1895, 14859), (1905, 14781), (3411, 8255), (4927, 5715), (4953, 5685)]