20451904

素因数分解:

$2^6\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:192

約数の個数: 84

約数和(自身を含む): 47294800

約数和(自身を除く): 26842896

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 64, 76, 88, 121, 139, 152, 176, 209, 242, 278, 304, 352, 418, 484, 556, 608, 704, 836, 968, 1112, 1216, 1529, 1672, 1936, 2224, 2299, 2641, 3058, 3344, 3872, 4448, 4598, 5282, 6116, 6688, 7744, 8896, 9196, 10564, 12232, 13376, 16819, 18392, 21128, 24464, 29051, 33638, 36784, 42256, 48928, 58102, 67276, 73568, 84512, 97856, 116204, 134552, 147136, 169024, 232408, 269104, 319561, 464816, 538208, 639122, 929632, 1076416, 1278244, 1859264, 2556488, 5112976, 10225952, 20451904]

約数ペア:

[(1, 20451904), (2, 10225952), (4, 5112976), (8, 2556488), (11, 1859264), (16, 1278244), (19, 1076416), (22, 929632), (32, 639122), (38, 538208), (44, 464816), (64, 319561), (76, 269104), (88, 232408), (121, 169024), (139, 147136), (152, 134552), (176, 116204), (209, 97856), (242, 84512), (278, 73568), (304, 67276), (352, 58102), (418, 48928), (484, 42256), (556, 36784), (608, 33638), (704, 29051), (836, 24464), (968, 21128), (1112, 18392), (1216, 16819), (1529, 13376), (1672, 12232), (1936, 10564), (2224, 9196), (2299, 8896), (2641, 7744), (3058, 6688), (3344, 6116), (3872, 5282), (4448, 4598)]