21497916

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 58480128

約数和(自身を除く): 36982212

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 23, 33, 44, 46, 66, 69, 73, 92, 97, 132, 138, 146, 194, 219, 253, 276, 291, 292, 388, 438, 506, 582, 759, 803, 876, 1012, 1067, 1164, 1518, 1606, 1679, 2134, 2231, 2409, 3036, 3201, 3212, 3358, 4268, 4462, 4818, 5037, 6402, 6693, 6716, 7081, 8924, 9636, 10074, 12804, 13386, 14162, 18469, 20148, 21243, 24541, 26772, 28324, 36938, 42486, 49082, 55407, 73623, 73876, 77891, 84972, 98164, 110814, 147246, 155782, 162863, 221628, 233673, 294492, 311564, 325726, 467346, 488589, 651452, 934692, 977178, 1791493, 1954356, 3582986, 5374479, 7165972, 10748958, 21497916]

約数ペア:

[(1, 21497916), (2, 10748958), (3, 7165972), (4, 5374479), (6, 3582986), (11, 1954356), (12, 1791493), (22, 977178), (23, 934692), (33, 651452), (44, 488589), (46, 467346), (66, 325726), (69, 311564), (73, 294492), (92, 233673), (97, 221628), (132, 162863), (138, 155782), (146, 147246), (194, 110814), (219, 98164), (253, 84972), (276, 77891), (291, 73876), (292, 73623), (388, 55407), (438, 49082), (506, 42486), (582, 36938), (759, 28324), (803, 26772), (876, 24541), (1012, 21243), (1067, 20148), (1164, 18469), (1518, 14162), (1606, 13386), (1679, 12804), (2134, 10074), (2231, 9636), (2409, 8924), (3036, 7081), (3201, 6716), (3212, 6693), (3358, 6402), (4268, 5037), (4462, 4818)]