21228988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{281}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 43491168

約数和(自身を除く): 22262180

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 101, 187, 202, 281, 374, 404, 562, 748, 1111, 1124, 1717, 2222, 3091, 3434, 4444, 4777, 6182, 6868, 9554, 12364, 18887, 19108, 28381, 37774, 52547, 56762, 75548, 105094, 113524, 210188, 312191, 482477, 624382, 964954, 1248764, 1929908, 5307247, 10614494, 21228988]

約数ペア:

[(1, 21228988), (2, 10614494), (4, 5307247), (11, 1929908), (17, 1248764), (22, 964954), (34, 624382), (44, 482477), (68, 312191), (101, 210188), (187, 113524), (202, 105094), (281, 75548), (374, 56762), (404, 52547), (562, 37774), (748, 28381), (1111, 19108), (1124, 18887), (1717, 12364), (2222, 9554), (3091, 6868), (3434, 6182), (4444, 4777)]