21038280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{881}}^1$

素因数の和:1094

約数の個数: 64

約数和(自身を含む): 63504000

約数和(自身を除く): 42465720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 199, 398, 597, 796, 881, 995, 1194, 1592, 1762, 1990, 2388, 2643, 2985, 3524, 3980, 4405, 4776, 5286, 5970, 7048, 7960, 8810, 10572, 11940, 13215, 17620, 21144, 23880, 26430, 35240, 52860, 105720, 175319, 350638, 525957, 701276, 876595, 1051914, 1402552, 1753190, 2103828, 2629785, 3506380, 4207656, 5259570, 7012760, 10519140, 21038280]

約数ペア:

[(1, 21038280), (2, 10519140), (3, 7012760), (4, 5259570), (5, 4207656), (6, 3506380), (8, 2629785), (10, 2103828), (12, 1753190), (15, 1402552), (20, 1051914), (24, 876595), (30, 701276), (40, 525957), (60, 350638), (120, 175319), (199, 105720), (398, 52860), (597, 35240), (796, 26430), (881, 23880), (995, 21144), (1194, 17620), (1592, 13215), (1762, 11940), (1990, 10572), (2388, 8810), (2643, 7960), (2985, 7048), (3524, 5970), (3980, 5286), (4405, 4776)]