21863408

素因数分解:

$2^4\times 7^2\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:454

約数の個数: 60

約数和(自身を含む): 50041440

約数和(自身を除く): 28178032

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 79, 98, 112, 158, 196, 316, 353, 392, 553, 632, 706, 784, 1106, 1264, 1412, 2212, 2471, 2824, 3871, 4424, 4942, 5648, 7742, 8848, 9884, 15484, 17297, 19768, 27887, 30968, 34594, 39536, 55774, 61936, 69188, 111548, 138376, 195209, 223096, 276752, 390418, 446192, 780836, 1366463, 1561672, 2732926, 3123344, 5465852, 10931704, 21863408]

約数ペア:

[(1, 21863408), (2, 10931704), (4, 5465852), (7, 3123344), (8, 2732926), (14, 1561672), (16, 1366463), (28, 780836), (49, 446192), (56, 390418), (79, 276752), (98, 223096), (112, 195209), (158, 138376), (196, 111548), (316, 69188), (353, 61936), (392, 55774), (553, 39536), (632, 34594), (706, 30968), (784, 27887), (1106, 19768), (1264, 17297), (1412, 15484), (2212, 9884), (2471, 8848), (2824, 7742), (3871, 5648), (4424, 4942)]