21478500

素因数分解:

$2^2\times 3^3\times 5^3\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:108

約数の個数: 192

約数和(自身を含む): 73032960

約数和(自身を除く): 51554460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 37, 43, 45, 50, 54, 60, 74, 75, 86, 90, 100, 108, 111, 125, 129, 135, 148, 150, 172, 180, 185, 215, 222, 225, 250, 258, 270, 300, 333, 370, 375, 387, 430, 444, 450, 500, 516, 540, 555, 645, 666, 675, 740, 750, 774, 860, 900, 925, 999, 1075, 1110, 1125, 1161, 1290, 1332, 1350, 1500, 1548, 1591, 1665, 1850, 1935, 1998, 2150, 2220, 2250, 2322, 2580, 2700, 2775, 3182, 3225, 3330, 3375, 3700, 3870, 3996, 4300, 4500, 4625, 4644, 4773, 4995, 5375, 5550, 5805, 6364, 6450, 6660, 6750, 7740, 7955, 8325, 9250, 9546, 9675, 9990, 10750, 11100, 11610, 12900, 13500, 13875, 14319, 15910, 16125, 16650, 18500, 19092, 19350, 19980, 21500, 23220, 23865, 24975, 27750, 28638, 29025, 31820, 32250, 33300, 38700, 39775, 41625, 42957, 47730, 48375, 49950, 55500, 57276, 58050, 64500, 71595, 79550, 83250, 85914, 95460, 96750, 99900, 116100, 119325, 124875, 143190, 145125, 159100, 166500, 171828, 193500, 198875, 214785, 238650, 249750, 286380, 290250, 357975, 397750, 429570, 477300, 499500, 580500, 596625, 715950, 795500, 859140, 1073925, 1193250, 1431900, 1789875, 2147850, 2386500, 3579750, 4295700, 5369625, 7159500, 10739250, 21478500]

約数ペア:

[(1, 21478500), (2, 10739250), (3, 7159500), (4, 5369625), (5, 4295700), (6, 3579750), (9, 2386500), (10, 2147850), (12, 1789875), (15, 1431900), (18, 1193250), (20, 1073925), (25, 859140), (27, 795500), (30, 715950), (36, 596625), (37, 580500), (43, 499500), (45, 477300), (50, 429570), (54, 397750), (60, 357975), (74, 290250), (75, 286380), (86, 249750), (90, 238650), (100, 214785), (108, 198875), (111, 193500), (125, 171828), (129, 166500), (135, 159100), (148, 145125), (150, 143190), (172, 124875), (180, 119325), (185, 116100), (215, 99900), (222, 96750), (225, 95460), (250, 85914), (258, 83250), (270, 79550), (300, 71595), (333, 64500), (370, 58050), (375, 57276), (387, 55500), (430, 49950), (444, 48375), (450, 47730), (500, 42957), (516, 41625), (540, 39775), (555, 38700), (645, 33300), (666, 32250), (675, 31820), (740, 29025), (750, 28638), (774, 27750), (860, 24975), (900, 23865), (925, 23220), (999, 21500), (1075, 19980), (1110, 19350), (1125, 19092), (1161, 18500), (1290, 16650), (1332, 16125), (1350, 15910), (1500, 14319), (1548, 13875), (1591, 13500), (1665, 12900), (1850, 11610), (1935, 11100), (1998, 10750), (2150, 9990), (2220, 9675), (2250, 9546), (2322, 9250), (2580, 8325), (2700, 7955), (2775, 7740), (3182, 6750), (3225, 6660), (3330, 6450), (3375, 6364), (3700, 5805), (3870, 5550), (3996, 5375), (4300, 4995), (4500, 4773), (4625, 4644)]