20705286

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{617}}^1$

素因数の和:693

約数の個数: 64

約数和(自身を含む): 51259392

約数和(自身を除く): 30554106

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 47, 51, 94, 102, 119, 141, 238, 282, 329, 357, 617, 658, 714, 799, 987, 1234, 1598, 1851, 1974, 2397, 3702, 4319, 4794, 5593, 8638, 10489, 11186, 12957, 16779, 20978, 25914, 28999, 31467, 33558, 57998, 62934, 73423, 86997, 146846, 173994, 202993, 220269, 405986, 440538, 492983, 608979, 985966, 1217958, 1478949, 2957898, 3450881, 6901762, 10352643, 20705286]

約数ペア:

[(1, 20705286), (2, 10352643), (3, 6901762), (6, 3450881), (7, 2957898), (14, 1478949), (17, 1217958), (21, 985966), (34, 608979), (42, 492983), (47, 440538), (51, 405986), (94, 220269), (102, 202993), (119, 173994), (141, 146846), (238, 86997), (282, 73423), (329, 62934), (357, 57998), (617, 33558), (658, 31467), (714, 28999), (799, 25914), (987, 20978), (1234, 16779), (1598, 12957), (1851, 11186), (1974, 10489), (2397, 8638), (3702, 5593), (4319, 4794)]