20918072

素因数分解:

$2^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{3491}}^1$

素因数の和:3611

約数の個数: 32

約数和(自身を含む): 45256320

約数和(自身を除く): 24338248

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 107, 214, 428, 749, 856, 1498, 2996, 3491, 5992, 6982, 13964, 24437, 27928, 48874, 97748, 195496, 373537, 747074, 1494148, 2614759, 2988296, 5229518, 10459036, 20918072]

約数ペア:

[(1, 20918072), (2, 10459036), (4, 5229518), (7, 2988296), (8, 2614759), (14, 1494148), (28, 747074), (56, 373537), (107, 195496), (214, 97748), (428, 48874), (749, 27928), (856, 24437), (1498, 13964), (2996, 6982), (3491, 5992)]