20117297375

素因数分解:

$5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:454

約数の個数: 128

約数和(自身を含む): 31313018880

約数和(自身を除く): 11195721505

約数列:

[1, 5, 7, 19, 25, 35, 43, 95, 107, 125, 133, 175, 215, 263, 301, 475, 535, 665, 749, 817, 875, 1075, 1315, 1505, 1841, 2033, 2375, 2675, 3325, 3745, 4085, 4601, 4997, 5375, 5719, 6575, 7525, 9205, 10165, 11309, 13375, 14231, 16625, 18725, 20425, 23005, 24985, 28141, 28595, 32207, 32875, 34979, 37625, 46025, 50825, 56545, 71155, 79163, 87419, 93625, 102125, 115025, 124925, 140705, 142975, 161035, 174895, 196987, 214871, 230125, 254125, 282725, 355775, 395815, 437095, 534679, 575125, 611933, 624625, 703525, 714875, 805175, 874475, 984935, 1074355, 1210063, 1413625, 1504097, 1778875, 1979075, 2185475, 2673395, 3059665, 3517625, 3742753, 4025875, 4372375, 4924675, 5371775, 6050315, 7520485, 8470441, 9895375, 10927375, 13366975, 15298325, 18713765, 22991197, 24623375, 26858875, 30251575, 37602425, 42352205, 66834875, 76491625, 93568825, 114955985, 151257875, 160938379, 188012125, 211761025, 467844125, 574779925, 804691895, 1058805125, 2873899625, 4023459475, 20117297375]

約数ペア:

[(1, 20117297375), (5, 4023459475), (7, 2873899625), (19, 1058805125), (25, 804691895), (35, 574779925), (43, 467844125), (95, 211761025), (107, 188012125), (125, 160938379), (133, 151257875), (175, 114955985), (215, 93568825), (263, 76491625), (301, 66834875), (475, 42352205), (535, 37602425), (665, 30251575), (749, 26858875), (817, 24623375), (875, 22991197), (1075, 18713765), (1315, 15298325), (1505, 13366975), (1841, 10927375), (2033, 9895375), (2375, 8470441), (2675, 7520485), (3325, 6050315), (3745, 5371775), (4085, 4924675), (4601, 4372375), (4997, 4025875), (5375, 3742753), (5719, 3517625), (6575, 3059665), (7525, 2673395), (9205, 2185475), (10165, 1979075), (11309, 1778875), (13375, 1504097), (14231, 1413625), (16625, 1210063), (18725, 1074355), (20425, 984935), (23005, 874475), (24985, 805175), (28141, 714875), (28595, 703525), (32207, 624625), (32875, 611933), (34979, 575125), (37625, 534679), (46025, 437095), (50825, 395815), (56545, 355775), (71155, 282725), (79163, 254125), (87419, 230125), (93625, 214871), (102125, 196987), (115025, 174895), (124925, 161035), (140705, 142975)]