21738784

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:565

約数の個数: 48

約数和(自身を含む): 45927000

約数和(自身を除く): 24188216

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 89, 136, 178, 272, 356, 449, 544, 712, 898, 1424, 1513, 1796, 2848, 3026, 3592, 6052, 7184, 7633, 12104, 14368, 15266, 24208, 30532, 39961, 48416, 61064, 79922, 122128, 159844, 244256, 319688, 639376, 679337, 1278752, 1358674, 2717348, 5434696, 10869392, 21738784]

約数ペア:

[(1, 21738784), (2, 10869392), (4, 5434696), (8, 2717348), (16, 1358674), (17, 1278752), (32, 679337), (34, 639376), (68, 319688), (89, 244256), (136, 159844), (178, 122128), (272, 79922), (356, 61064), (449, 48416), (544, 39961), (712, 30532), (898, 24208), (1424, 15266), (1513, 14368), (1796, 12104), (2848, 7633), (3026, 7184), (3592, 6052)]