21618016

素因数分解:

$2^5\times 7^2\times {\mathrm{17}}^1\times {\mathrm{811}}^1$

素因数の和:852

約数の個数: 72

約数和(自身を含む): 52486056

約数和(自身を除く): 30868040

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 49, 56, 68, 98, 112, 119, 136, 196, 224, 238, 272, 392, 476, 544, 784, 811, 833, 952, 1568, 1622, 1666, 1904, 3244, 3332, 3808, 5677, 6488, 6664, 11354, 12976, 13328, 13787, 22708, 25952, 26656, 27574, 39739, 45416, 55148, 79478, 90832, 96509, 110296, 158956, 181664, 193018, 220592, 317912, 386036, 441184, 635824, 675563, 772072, 1271648, 1351126, 1544144, 2702252, 3088288, 5404504, 10809008, 21618016]

約数ペア:

[(1, 21618016), (2, 10809008), (4, 5404504), (7, 3088288), (8, 2702252), (14, 1544144), (16, 1351126), (17, 1271648), (28, 772072), (32, 675563), (34, 635824), (49, 441184), (56, 386036), (68, 317912), (98, 220592), (112, 193018), (119, 181664), (136, 158956), (196, 110296), (224, 96509), (238, 90832), (272, 79478), (392, 55148), (476, 45416), (544, 39739), (784, 27574), (811, 26656), (833, 25952), (952, 22708), (1568, 13787), (1622, 13328), (1666, 12976), (1904, 11354), (3244, 6664), (3332, 6488), (3808, 5677)]