221988536

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{181}}^2$

素因数の和:397

約数の個数: 72

約数和(自身を含む): 525770280

約数和(自身を除く): 303781744

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 121, 154, 181, 242, 308, 362, 484, 616, 724, 847, 968, 1267, 1448, 1694, 1991, 2534, 3388, 3982, 5068, 6776, 7964, 10136, 13937, 15928, 21901, 27874, 32761, 43802, 55748, 65522, 87604, 111496, 131044, 153307, 175208, 229327, 262088, 306614, 360371, 458654, 613228, 720742, 917308, 1226456, 1441484, 1834616, 2522597, 2882968, 3964081, 5045194, 7928162, 10090388, 15856324, 20180776, 27748567, 31712648, 55497134, 110994268, 221988536]

約数ペア:

[(1, 221988536), (2, 110994268), (4, 55497134), (7, 31712648), (8, 27748567), (11, 20180776), (14, 15856324), (22, 10090388), (28, 7928162), (44, 5045194), (56, 3964081), (77, 2882968), (88, 2522597), (121, 1834616), (154, 1441484), (181, 1226456), (242, 917308), (308, 720742), (362, 613228), (484, 458654), (616, 360371), (724, 306614), (847, 262088), (968, 229327), (1267, 175208), (1448, 153307), (1694, 131044), (1991, 111496), (2534, 87604), (3388, 65522), (3982, 55748), (5068, 43802), (6776, 32761), (7964, 27874), (10136, 21901), (13937, 15928)]