20291050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 24706070

約数列:

[1, 2, 5, 10, 13, 19, 25, 26, 31, 38, 50, 53, 62, 65, 95, 106, 130, 155, 190, 247, 265, 310, 325, 403, 475, 494, 530, 589, 650, 689, 775, 806, 950, 1007, 1178, 1235, 1325, 1378, 1550, 1643, 2014, 2015, 2470, 2650, 2945, 3286, 3445, 4030, 5035, 5890, 6175, 6890, 7657, 8215, 10070, 10075, 12350, 13091, 14725, 15314, 16430, 17225, 20150, 21359, 25175, 26182, 29450, 31217, 34450, 38285, 41075, 42718, 50350, 62434, 65455, 76570, 82150, 106795, 130910, 156085, 191425, 213590, 312170, 327275, 382850, 405821, 533975, 654550, 780425, 811642, 1067950, 1560850, 2029105, 4058210, 10145525, 20291050]

約数ペア:

[(1, 20291050), (2, 10145525), (5, 4058210), (10, 2029105), (13, 1560850), (19, 1067950), (25, 811642), (26, 780425), (31, 654550), (38, 533975), (50, 405821), (53, 382850), (62, 327275), (65, 312170), (95, 213590), (106, 191425), (130, 156085), (155, 130910), (190, 106795), (247, 82150), (265, 76570), (310, 65455), (325, 62434), (403, 50350), (475, 42718), (494, 41075), (530, 38285), (589, 34450), (650, 31217), (689, 29450), (775, 26182), (806, 25175), (950, 21359), (1007, 20150), (1178, 17225), (1235, 16430), (1325, 15314), (1378, 14725), (1550, 13091), (1643, 12350), (2014, 10075), (2015, 10070), (2470, 8215), (2650, 7657), (2945, 6890), (3286, 6175), (3445, 5890), (4030, 5035)]