20660178

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 52005888

約数和(自身を除く): 31345710

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 154, 197, 227, 231, 394, 454, 462, 591, 681, 1182, 1362, 1379, 1589, 2167, 2497, 2758, 3178, 4137, 4334, 4767, 4994, 6501, 7491, 8274, 9534, 13002, 14982, 15169, 17479, 30338, 34958, 44719, 45507, 52437, 89438, 91014, 104874, 134157, 268314, 313033, 491909, 626066, 939099, 983818, 1475727, 1878198, 2951454, 3443363, 6886726, 10330089, 20660178]

約数ペア:

[(1, 20660178), (2, 10330089), (3, 6886726), (6, 3443363), (7, 2951454), (11, 1878198), (14, 1475727), (21, 983818), (22, 939099), (33, 626066), (42, 491909), (66, 313033), (77, 268314), (154, 134157), (197, 104874), (227, 91014), (231, 89438), (394, 52437), (454, 45507), (462, 44719), (591, 34958), (681, 30338), (1182, 17479), (1362, 15169), (1379, 14982), (1589, 13002), (2167, 9534), (2497, 8274), (2758, 7491), (3178, 6501), (4137, 4994), (4334, 4767)]