18937952

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 42163128

約数和(自身を除く): 23225176

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 67, 73, 88, 121, 134, 146, 176, 242, 268, 292, 352, 484, 536, 584, 737, 803, 968, 1072, 1168, 1474, 1606, 1936, 2144, 2336, 2948, 3212, 3872, 4891, 5896, 6424, 8107, 8833, 9782, 11792, 12848, 16214, 17666, 19564, 23584, 25696, 32428, 35332, 39128, 53801, 64856, 70664, 78256, 107602, 129712, 141328, 156512, 215204, 259424, 282656, 430408, 591811, 860816, 1183622, 1721632, 2367244, 4734488, 9468976, 18937952]

約数ペア:

[(1, 18937952), (2, 9468976), (4, 4734488), (8, 2367244), (11, 1721632), (16, 1183622), (22, 860816), (32, 591811), (44, 430408), (67, 282656), (73, 259424), (88, 215204), (121, 156512), (134, 141328), (146, 129712), (176, 107602), (242, 78256), (268, 70664), (292, 64856), (352, 53801), (484, 39128), (536, 35332), (584, 32428), (737, 25696), (803, 23584), (968, 19564), (1072, 17666), (1168, 16214), (1474, 12848), (1606, 11792), (1936, 9782), (2144, 8833), (2336, 8107), (2948, 6424), (3212, 5896), (3872, 4891)]