19911600

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{5531}}^1$

素因数の和:5555

約数の個数: 90

約数和(自身を含む): 69111276

約数和(自身を除く): 49199676

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 100, 120, 144, 150, 180, 200, 225, 240, 300, 360, 400, 450, 600, 720, 900, 1200, 1800, 3600, 5531, 11062, 16593, 22124, 27655, 33186, 44248, 49779, 55310, 66372, 82965, 88496, 99558, 110620, 132744, 138275, 165930, 199116, 221240, 248895, 265488, 276550, 331860, 398232, 414825, 442480, 497790, 553100, 663720, 796464, 829650, 995580, 1106200, 1244475, 1327440, 1659300, 1991160, 2212400, 2488950, 3318600, 3982320, 4977900, 6637200, 9955800, 19911600]

約数ペア:

[(1, 19911600), (2, 9955800), (3, 6637200), (4, 4977900), (5, 3982320), (6, 3318600), (8, 2488950), (9, 2212400), (10, 1991160), (12, 1659300), (15, 1327440), (16, 1244475), (18, 1106200), (20, 995580), (24, 829650), (25, 796464), (30, 663720), (36, 553100), (40, 497790), (45, 442480), (48, 414825), (50, 398232), (60, 331860), (72, 276550), (75, 265488), (80, 248895), (90, 221240), (100, 199116), (120, 165930), (144, 138275), (150, 132744), (180, 110620), (200, 99558), (225, 88496), (240, 82965), (300, 66372), (360, 55310), (400, 49779), (450, 44248), (600, 33186), (720, 27655), (900, 22124), (1200, 16593), (1800, 11062), (3600, 5531)]