20178000

素因数分解:

$2^4\times 3^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:107

約数の個数: 240

約数和(自身を含む): 75441600

約数和(自身を除く): 55263600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 25, 30, 36, 38, 40, 45, 48, 50, 57, 59, 60, 72, 75, 76, 80, 90, 95, 100, 114, 118, 120, 125, 144, 150, 152, 171, 177, 180, 190, 200, 225, 228, 236, 240, 250, 285, 295, 300, 304, 342, 354, 360, 375, 380, 400, 450, 456, 472, 475, 500, 531, 570, 590, 600, 684, 708, 720, 750, 760, 855, 885, 900, 912, 944, 950, 1000, 1062, 1121, 1125, 1140, 1180, 1200, 1368, 1416, 1425, 1475, 1500, 1520, 1710, 1770, 1800, 1900, 2000, 2124, 2242, 2250, 2280, 2360, 2375, 2655, 2736, 2832, 2850, 2950, 3000, 3363, 3420, 3540, 3600, 3800, 4248, 4275, 4425, 4484, 4500, 4560, 4720, 4750, 5310, 5605, 5700, 5900, 6000, 6726, 6840, 7080, 7125, 7375, 7600, 8496, 8550, 8850, 8968, 9000, 9500, 10089, 10620, 11210, 11400, 11800, 13275, 13452, 13680, 14160, 14250, 14750, 16815, 17100, 17700, 17936, 18000, 19000, 20178, 21240, 21375, 22125, 22420, 22800, 23600, 26550, 26904, 28025, 28500, 29500, 33630, 34200, 35400, 38000, 40356, 42480, 42750, 44250, 44840, 50445, 53100, 53808, 56050, 57000, 59000, 66375, 67260, 68400, 70800, 80712, 84075, 85500, 88500, 89680, 100890, 106200, 112100, 114000, 118000, 132750, 134520, 140125, 161424, 168150, 171000, 177000, 201780, 212400, 224200, 252225, 265500, 269040, 280250, 336300, 342000, 354000, 403560, 420375, 448400, 504450, 531000, 560500, 672600, 807120, 840750, 1008900, 1062000, 1121000, 1261125, 1345200, 1681500, 2017800, 2242000, 2522250, 3363000, 4035600, 5044500, 6726000, 10089000, 20178000]

約数ペア:

[(1, 20178000), (2, 10089000), (3, 6726000), (4, 5044500), (5, 4035600), (6, 3363000), (8, 2522250), (9, 2242000), (10, 2017800), (12, 1681500), (15, 1345200), (16, 1261125), (18, 1121000), (19, 1062000), (20, 1008900), (24, 840750), (25, 807120), (30, 672600), (36, 560500), (38, 531000), (40, 504450), (45, 448400), (48, 420375), (50, 403560), (57, 354000), (59, 342000), (60, 336300), (72, 280250), (75, 269040), (76, 265500), (80, 252225), (90, 224200), (95, 212400), (100, 201780), (114, 177000), (118, 171000), (120, 168150), (125, 161424), (144, 140125), (150, 134520), (152, 132750), (171, 118000), (177, 114000), (180, 112100), (190, 106200), (200, 100890), (225, 89680), (228, 88500), (236, 85500), (240, 84075), (250, 80712), (285, 70800), (295, 68400), (300, 67260), (304, 66375), (342, 59000), (354, 57000), (360, 56050), (375, 53808), (380, 53100), (400, 50445), (450, 44840), (456, 44250), (472, 42750), (475, 42480), (500, 40356), (531, 38000), (570, 35400), (590, 34200), (600, 33630), (684, 29500), (708, 28500), (720, 28025), (750, 26904), (760, 26550), (855, 23600), (885, 22800), (900, 22420), (912, 22125), (944, 21375), (950, 21240), (1000, 20178), (1062, 19000), (1121, 18000), (1125, 17936), (1140, 17700), (1180, 17100), (1200, 16815), (1368, 14750), (1416, 14250), (1425, 14160), (1475, 13680), (1500, 13452), (1520, 13275), (1710, 11800), (1770, 11400), (1800, 11210), (1900, 10620), (2000, 10089), (2124, 9500), (2242, 9000), (2250, 8968), (2280, 8850), (2360, 8550), (2375, 8496), (2655, 7600), (2736, 7375), (2832, 7125), (2850, 7080), (2950, 6840), (3000, 6726), (3363, 6000), (3420, 5900), (3540, 5700), (3600, 5605), (3800, 5310), (4248, 4750), (4275, 4720), (4425, 4560), (4484, 4500)]