21535605

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1753}}^1$

素因数の和:1787

約数の個数: 64

約数和(自身を含む): 47147520

約数和(自身を除く): 25611915

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1753, 1755, 2457, 4095, 5259, 8765, 12271, 12285, 15777, 22789, 26295, 36813, 47331, 61355, 68367, 78885, 110439, 113945, 159523, 184065, 205101, 236655, 331317, 341835, 478569, 552195, 615303, 797615, 1025505, 1435707, 1656585, 2392845, 3076515, 4307121, 7178535, 21535605]

約数ペア:

[(1, 21535605), (3, 7178535), (5, 4307121), (7, 3076515), (9, 2392845), (13, 1656585), (15, 1435707), (21, 1025505), (27, 797615), (35, 615303), (39, 552195), (45, 478569), (63, 341835), (65, 331317), (91, 236655), (105, 205101), (117, 184065), (135, 159523), (189, 113945), (195, 110439), (273, 78885), (315, 68367), (351, 61355), (455, 47331), (585, 36813), (819, 26295), (945, 22789), (1365, 15777), (1753, 12285), (1755, 12271), (2457, 8765), (4095, 5259)]