20161575

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1$

素因数の和:294

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 24835545

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 27, 35, 45, 51, 63, 75, 85, 105, 119, 135, 153, 175, 189, 225, 251, 255, 315, 357, 425, 459, 525, 595, 675, 753, 765, 945, 1071, 1255, 1275, 1575, 1757, 1785, 2259, 2295, 2975, 3213, 3765, 3825, 4267, 4725, 5271, 5355, 6275, 6777, 8785, 8925, 11295, 11475, 12801, 15813, 16065, 18825, 21335, 26355, 26775, 29869, 33885, 38403, 43925, 47439, 56475, 64005, 79065, 80325, 89607, 106675, 115209, 131775, 149345, 169425, 192015, 237195, 268821, 320025, 395325, 448035, 576045, 746725, 806463, 960075, 1185975, 1344105, 2240175, 2880225, 4032315, 6720525, 20161575]

約数ペア:

[(1, 20161575), (3, 6720525), (5, 4032315), (7, 2880225), (9, 2240175), (15, 1344105), (17, 1185975), (21, 960075), (25, 806463), (27, 746725), (35, 576045), (45, 448035), (51, 395325), (63, 320025), (75, 268821), (85, 237195), (105, 192015), (119, 169425), (135, 149345), (153, 131775), (175, 115209), (189, 106675), (225, 89607), (251, 80325), (255, 79065), (315, 64005), (357, 56475), (425, 47439), (459, 43925), (525, 38403), (595, 33885), (675, 29869), (753, 26775), (765, 26355), (945, 21335), (1071, 18825), (1255, 16065), (1275, 15813), (1575, 12801), (1757, 11475), (1785, 11295), (2259, 8925), (2295, 8785), (2975, 6777), (3213, 6275), (3765, 5355), (3825, 5271), (4267, 4725)]