71867500

素因数分解:

$2^2\times 5^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:149

約数の個数: 120

約数和(自身を含む): 177130800

約数和(自身を除く): 105263300

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 25, 34, 38, 50, 68, 76, 85, 89, 95, 100, 125, 170, 178, 190, 250, 323, 340, 356, 380, 425, 445, 475, 500, 625, 646, 850, 890, 950, 1250, 1292, 1513, 1615, 1691, 1700, 1780, 1900, 2125, 2225, 2375, 2500, 3026, 3230, 3382, 4250, 4450, 4750, 6052, 6460, 6764, 7565, 8075, 8455, 8500, 8900, 9500, 10625, 11125, 11875, 15130, 16150, 16910, 21250, 22250, 23750, 28747, 30260, 32300, 33820, 37825, 40375, 42275, 42500, 44500, 47500, 55625, 57494, 75650, 80750, 84550, 111250, 114988, 143735, 151300, 161500, 169100, 189125, 201875, 211375, 222500, 287470, 378250, 403750, 422750, 574940, 718675, 756500, 807500, 845500, 945625, 1056875, 1437350, 1891250, 2113750, 2874700, 3593375, 3782500, 4227500, 7186750, 14373500, 17966875, 35933750, 71867500]

約数ペア:

[(1, 71867500), (2, 35933750), (4, 17966875), (5, 14373500), (10, 7186750), (17, 4227500), (19, 3782500), (20, 3593375), (25, 2874700), (34, 2113750), (38, 1891250), (50, 1437350), (68, 1056875), (76, 945625), (85, 845500), (89, 807500), (95, 756500), (100, 718675), (125, 574940), (170, 422750), (178, 403750), (190, 378250), (250, 287470), (323, 222500), (340, 211375), (356, 201875), (380, 189125), (425, 169100), (445, 161500), (475, 151300), (500, 143735), (625, 114988), (646, 111250), (850, 84550), (890, 80750), (950, 75650), (1250, 57494), (1292, 55625), (1513, 47500), (1615, 44500), (1691, 42500), (1700, 42275), (1780, 40375), (1900, 37825), (2125, 33820), (2225, 32300), (2375, 30260), (2500, 28747), (3026, 23750), (3230, 22250), (3382, 21250), (4250, 16910), (4450, 16150), (4750, 15130), (6052, 11875), (6460, 11125), (6764, 10625), (7565, 9500), (8075, 8900), (8455, 8500)]