19990800

素因数分解:

$2^4\times 3^4\times 5^2\times {\mathrm{617}}^1$

素因数の和:647

約数の個数: 150

約数和(自身を含む): 71861658

約数和(自身を除く): 51870858

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 36, 40, 45, 48, 50, 54, 60, 72, 75, 80, 81, 90, 100, 108, 120, 135, 144, 150, 162, 180, 200, 216, 225, 240, 270, 300, 324, 360, 400, 405, 432, 450, 540, 600, 617, 648, 675, 720, 810, 900, 1080, 1200, 1234, 1296, 1350, 1620, 1800, 1851, 2025, 2160, 2468, 2700, 3085, 3240, 3600, 3702, 4050, 4936, 5400, 5553, 6170, 6480, 7404, 8100, 9255, 9872, 10800, 11106, 12340, 14808, 15425, 16200, 16659, 18510, 22212, 24680, 27765, 29616, 30850, 32400, 33318, 37020, 44424, 46275, 49360, 49977, 55530, 61700, 66636, 74040, 83295, 88848, 92550, 99954, 111060, 123400, 133272, 138825, 148080, 166590, 185100, 199908, 222120, 246800, 249885, 266544, 277650, 333180, 370200, 399816, 416475, 444240, 499770, 555300, 666360, 740400, 799632, 832950, 999540, 1110600, 1249425, 1332720, 1665900, 1999080, 2221200, 2498850, 3331800, 3998160, 4997700, 6663600, 9995400, 19990800]

約数ペア:

[(1, 19990800), (2, 9995400), (3, 6663600), (4, 4997700), (5, 3998160), (6, 3331800), (8, 2498850), (9, 2221200), (10, 1999080), (12, 1665900), (15, 1332720), (16, 1249425), (18, 1110600), (20, 999540), (24, 832950), (25, 799632), (27, 740400), (30, 666360), (36, 555300), (40, 499770), (45, 444240), (48, 416475), (50, 399816), (54, 370200), (60, 333180), (72, 277650), (75, 266544), (80, 249885), (81, 246800), (90, 222120), (100, 199908), (108, 185100), (120, 166590), (135, 148080), (144, 138825), (150, 133272), (162, 123400), (180, 111060), (200, 99954), (216, 92550), (225, 88848), (240, 83295), (270, 74040), (300, 66636), (324, 61700), (360, 55530), (400, 49977), (405, 49360), (432, 46275), (450, 44424), (540, 37020), (600, 33318), (617, 32400), (648, 30850), (675, 29616), (720, 27765), (810, 24680), (900, 22212), (1080, 18510), (1200, 16659), (1234, 16200), (1296, 15425), (1350, 14808), (1620, 12340), (1800, 11106), (1851, 10800), (2025, 9872), (2160, 9255), (2468, 8100), (2700, 7404), (3085, 6480), (3240, 6170), (3600, 5553), (3702, 5400), (4050, 4936)]