20714925

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 45425664

約数和(自身を除く): 24710739

約数列:

[1, 3, 5, 7, 11, 15, 17, 21, 25, 33, 35, 51, 55, 75, 77, 85, 105, 119, 165, 175, 187, 211, 231, 255, 275, 357, 385, 425, 525, 561, 595, 633, 825, 935, 1055, 1155, 1275, 1309, 1477, 1785, 1925, 2321, 2805, 2975, 3165, 3587, 3927, 4431, 4675, 5275, 5775, 6545, 6963, 7385, 8925, 10761, 11605, 14025, 15825, 16247, 17935, 19635, 22155, 25109, 32725, 34815, 36925, 39457, 48741, 53805, 58025, 75327, 81235, 89675, 98175, 110775, 118371, 125545, 174075, 197285, 243705, 269025, 276199, 376635, 406175, 591855, 627725, 828597, 986425, 1218525, 1380995, 1883175, 2959275, 4142985, 6904975, 20714925]

約数ペア:

[(1, 20714925), (3, 6904975), (5, 4142985), (7, 2959275), (11, 1883175), (15, 1380995), (17, 1218525), (21, 986425), (25, 828597), (33, 627725), (35, 591855), (51, 406175), (55, 376635), (75, 276199), (77, 269025), (85, 243705), (105, 197285), (119, 174075), (165, 125545), (175, 118371), (187, 110775), (211, 98175), (231, 89675), (255, 81235), (275, 75327), (357, 58025), (385, 53805), (425, 48741), (525, 39457), (561, 36925), (595, 34815), (633, 32725), (825, 25109), (935, 22155), (1055, 19635), (1155, 17935), (1275, 16247), (1309, 15825), (1477, 14025), (1785, 11605), (1925, 10761), (2321, 8925), (2805, 7385), (2975, 6963), (3165, 6545), (3587, 5775), (3927, 5275), (4431, 4675)]