21013488

素因数分解:

$2^4\times 3^2\times {\mathrm{73}}^1\times {\mathrm{1999}}^1$

素因数の和:2086

約数の個数: 60

約数和(自身を含む): 59644000

約数和(自身を除く): 38630512

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 73, 144, 146, 219, 292, 438, 584, 657, 876, 1168, 1314, 1752, 1999, 2628, 3504, 3998, 5256, 5997, 7996, 10512, 11994, 15992, 17991, 23988, 31984, 35982, 47976, 71964, 95952, 143928, 145927, 287856, 291854, 437781, 583708, 875562, 1167416, 1313343, 1751124, 2334832, 2626686, 3502248, 5253372, 7004496, 10506744, 21013488]

約数ペア:

[(1, 21013488), (2, 10506744), (3, 7004496), (4, 5253372), (6, 3502248), (8, 2626686), (9, 2334832), (12, 1751124), (16, 1313343), (18, 1167416), (24, 875562), (36, 583708), (48, 437781), (72, 291854), (73, 287856), (144, 145927), (146, 143928), (219, 95952), (292, 71964), (438, 47976), (584, 35982), (657, 31984), (876, 23988), (1168, 17991), (1314, 15992), (1752, 11994), (1999, 10512), (2628, 7996), (3504, 5997), (3998, 5256)]