21330784

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{347}}^1$

素因数の和:487

約数の個数: 48

約数和(自身を含む): 44988048

約数和(自身を除く): 23657264

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 113, 136, 226, 272, 347, 452, 544, 694, 904, 1388, 1808, 1921, 2776, 3616, 3842, 5552, 5899, 7684, 11104, 11798, 15368, 23596, 30736, 39211, 47192, 61472, 78422, 94384, 156844, 188768, 313688, 627376, 666587, 1254752, 1333174, 2666348, 5332696, 10665392, 21330784]

約数ペア:

[(1, 21330784), (2, 10665392), (4, 5332696), (8, 2666348), (16, 1333174), (17, 1254752), (32, 666587), (34, 627376), (68, 313688), (113, 188768), (136, 156844), (226, 94384), (272, 78422), (347, 61472), (452, 47192), (544, 39211), (694, 30736), (904, 23596), (1388, 15368), (1808, 11798), (1921, 11104), (2776, 7684), (3616, 5899), (3842, 5552)]