31312000

素因数分解:

$2^7\times 5^3\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:151

約数の個数: 128

約数和(自身を含む): 82742400

約数和(自身を除く): 51430400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 64, 76, 80, 95, 100, 103, 125, 128, 152, 160, 190, 200, 206, 250, 304, 320, 380, 400, 412, 475, 500, 515, 608, 640, 760, 800, 824, 950, 1000, 1030, 1216, 1520, 1600, 1648, 1900, 1957, 2000, 2060, 2375, 2432, 2575, 3040, 3200, 3296, 3800, 3914, 4000, 4120, 4750, 5150, 6080, 6592, 7600, 7828, 8000, 8240, 9500, 9785, 10300, 12160, 12875, 13184, 15200, 15656, 16000, 16480, 19000, 19570, 20600, 25750, 30400, 31312, 32960, 38000, 39140, 41200, 48925, 51500, 60800, 62624, 65920, 76000, 78280, 82400, 97850, 103000, 125248, 152000, 156560, 164800, 195700, 206000, 244625, 250496, 304000, 313120, 329600, 391400, 412000, 489250, 626240, 782800, 824000, 978500, 1252480, 1565600, 1648000, 1957000, 3131200, 3914000, 6262400, 7828000, 15656000, 31312000]

約数ペア:

[(1, 31312000), (2, 15656000), (4, 7828000), (5, 6262400), (8, 3914000), (10, 3131200), (16, 1957000), (19, 1648000), (20, 1565600), (25, 1252480), (32, 978500), (38, 824000), (40, 782800), (50, 626240), (64, 489250), (76, 412000), (80, 391400), (95, 329600), (100, 313120), (103, 304000), (125, 250496), (128, 244625), (152, 206000), (160, 195700), (190, 164800), (200, 156560), (206, 152000), (250, 125248), (304, 103000), (320, 97850), (380, 82400), (400, 78280), (412, 76000), (475, 65920), (500, 62624), (515, 60800), (608, 51500), (640, 48925), (760, 41200), (800, 39140), (824, 38000), (950, 32960), (1000, 31312), (1030, 30400), (1216, 25750), (1520, 20600), (1600, 19570), (1648, 19000), (1900, 16480), (1957, 16000), (2000, 15656), (2060, 15200), (2375, 13184), (2432, 12875), (2575, 12160), (3040, 10300), (3200, 9785), (3296, 9500), (3800, 8240), (3914, 8000), (4000, 7828), (4120, 7600), (4750, 6592), (5150, 6080)]