21841490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 23881390

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 89, 97, 110, 115, 178, 194, 230, 253, 445, 485, 506, 890, 970, 979, 1067, 1265, 1958, 2047, 2134, 2231, 2530, 4094, 4462, 4895, 5335, 8633, 9790, 10235, 10670, 11155, 17266, 20470, 22310, 22517, 24541, 43165, 45034, 49082, 86330, 94963, 112585, 122705, 189926, 198559, 225170, 245410, 397118, 474815, 949630, 992795, 1985590, 2184149, 4368298, 10920745, 21841490]

約数ペア:

[(1, 21841490), (2, 10920745), (5, 4368298), (10, 2184149), (11, 1985590), (22, 992795), (23, 949630), (46, 474815), (55, 397118), (89, 245410), (97, 225170), (110, 198559), (115, 189926), (178, 122705), (194, 112585), (230, 94963), (253, 86330), (445, 49082), (485, 45034), (506, 43165), (890, 24541), (970, 22517), (979, 22310), (1067, 20470), (1265, 17266), (1958, 11155), (2047, 10670), (2134, 10235), (2231, 9790), (2530, 8633), (4094, 5335), (4462, 4895)]