20721078

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3499}}^1$

素因数の和:3561

約数の個数: 48

約数和(自身を含む): 52416000

約数和(自身を除く): 31694922

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 47, 63, 94, 126, 141, 282, 329, 423, 658, 846, 987, 1974, 2961, 3499, 5922, 6998, 10497, 20994, 24493, 31491, 48986, 62982, 73479, 146958, 164453, 220437, 328906, 440874, 493359, 986718, 1151171, 1480077, 2302342, 2960154, 3453513, 6907026, 10360539, 20721078]

約数ペア:

[(1, 20721078), (2, 10360539), (3, 6907026), (6, 3453513), (7, 2960154), (9, 2302342), (14, 1480077), (18, 1151171), (21, 986718), (42, 493359), (47, 440874), (63, 328906), (94, 220437), (126, 164453), (141, 146958), (282, 73479), (329, 62982), (423, 48986), (658, 31491), (846, 24493), (987, 20994), (1974, 10497), (2961, 6998), (3499, 5922)]