20689816

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 47623680

約数和(自身を除く): 26933864

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 103, 119, 136, 206, 211, 238, 412, 422, 476, 721, 824, 844, 952, 1442, 1477, 1688, 1751, 2884, 2954, 3502, 3587, 5768, 5908, 7004, 7174, 11816, 12257, 14008, 14348, 21733, 24514, 25109, 28696, 43466, 49028, 50218, 86932, 98056, 100436, 152131, 173864, 200872, 304262, 369461, 608524, 738922, 1217048, 1477844, 2586227, 2955688, 5172454, 10344908, 20689816]

約数ペア:

[(1, 20689816), (2, 10344908), (4, 5172454), (7, 2955688), (8, 2586227), (14, 1477844), (17, 1217048), (28, 738922), (34, 608524), (56, 369461), (68, 304262), (103, 200872), (119, 173864), (136, 152131), (206, 100436), (211, 98056), (238, 86932), (412, 50218), (422, 49028), (476, 43466), (721, 28696), (824, 25109), (844, 24514), (952, 21733), (1442, 14348), (1477, 14008), (1688, 12257), (1751, 11816), (2884, 7174), (2954, 7004), (3502, 5908), (3587, 5768)]