21209748

素因数分解:

$2^2\times 3^1\times 7^3\times {\mathrm{5153}}^1$

素因数の和:5181

約数の個数: 48

約数和(自身を含む): 57724800

約数和(自身を除く): 36515052

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 343, 588, 686, 1029, 1372, 2058, 4116, 5153, 10306, 15459, 20612, 30918, 36071, 61836, 72142, 108213, 144284, 216426, 252497, 432852, 504994, 757491, 1009988, 1514982, 1767479, 3029964, 3534958, 5302437, 7069916, 10604874, 21209748]

約数ペア:

[(1, 21209748), (2, 10604874), (3, 7069916), (4, 5302437), (6, 3534958), (7, 3029964), (12, 1767479), (14, 1514982), (21, 1009988), (28, 757491), (42, 504994), (49, 432852), (84, 252497), (98, 216426), (147, 144284), (196, 108213), (294, 72142), (343, 61836), (588, 36071), (686, 30918), (1029, 20612), (1372, 15459), (2058, 10306), (4116, 5153)]