21497000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:148

約数の個数: 128

約数和(自身を含む): 59754240

約数和(自身を除く): 38257240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 37, 40, 50, 56, 70, 74, 83, 100, 125, 140, 148, 166, 175, 185, 200, 250, 259, 280, 296, 332, 350, 370, 415, 500, 518, 581, 664, 700, 740, 830, 875, 925, 1000, 1036, 1162, 1295, 1400, 1480, 1660, 1750, 1850, 2072, 2075, 2324, 2590, 2905, 3071, 3320, 3500, 3700, 4150, 4625, 4648, 5180, 5810, 6142, 6475, 7000, 7400, 8300, 9250, 10360, 10375, 11620, 12284, 12950, 14525, 15355, 16600, 18500, 20750, 21497, 23240, 24568, 25900, 29050, 30710, 32375, 37000, 41500, 42994, 51800, 58100, 61420, 64750, 72625, 76775, 83000, 85988, 107485, 116200, 122840, 129500, 145250, 153550, 171976, 214970, 259000, 290500, 307100, 383875, 429940, 537425, 581000, 614200, 767750, 859880, 1074850, 1535500, 2149700, 2687125, 3071000, 4299400, 5374250, 10748500, 21497000]

約数ペア:

[(1, 21497000), (2, 10748500), (4, 5374250), (5, 4299400), (7, 3071000), (8, 2687125), (10, 2149700), (14, 1535500), (20, 1074850), (25, 859880), (28, 767750), (35, 614200), (37, 581000), (40, 537425), (50, 429940), (56, 383875), (70, 307100), (74, 290500), (83, 259000), (100, 214970), (125, 171976), (140, 153550), (148, 145250), (166, 129500), (175, 122840), (185, 116200), (200, 107485), (250, 85988), (259, 83000), (280, 76775), (296, 72625), (332, 64750), (350, 61420), (370, 58100), (415, 51800), (500, 42994), (518, 41500), (581, 37000), (664, 32375), (700, 30710), (740, 29050), (830, 25900), (875, 24568), (925, 23240), (1000, 21497), (1036, 20750), (1162, 18500), (1295, 16600), (1400, 15355), (1480, 14525), (1660, 12950), (1750, 12284), (1850, 11620), (2072, 10375), (2075, 10360), (2324, 9250), (2590, 8300), (2905, 7400), (3071, 7000), (3320, 6475), (3500, 6142), (3700, 5810), (4150, 5180), (4625, 4648)]