21357952

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^2\times {\mathrm{197}}^1$

素因数の和:240

約数の個数: 96

約数和(自身を含む): 53721360

約数和(自身を除く): 32363408

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 121, 128, 154, 176, 197, 224, 242, 308, 352, 394, 448, 484, 616, 704, 788, 847, 896, 968, 1232, 1379, 1408, 1576, 1694, 1936, 2167, 2464, 2758, 3152, 3388, 3872, 4334, 4928, 5516, 6304, 6776, 7744, 8668, 9856, 11032, 12608, 13552, 15169, 15488, 17336, 22064, 23837, 25216, 27104, 30338, 34672, 44128, 47674, 54208, 60676, 69344, 88256, 95348, 108416, 121352, 138688, 166859, 176512, 190696, 242704, 277376, 333718, 381392, 485408, 667436, 762784, 970816, 1334872, 1525568, 1941632, 2669744, 3051136, 5339488, 10678976, 21357952]

約数ペア:

[(1, 21357952), (2, 10678976), (4, 5339488), (7, 3051136), (8, 2669744), (11, 1941632), (14, 1525568), (16, 1334872), (22, 970816), (28, 762784), (32, 667436), (44, 485408), (56, 381392), (64, 333718), (77, 277376), (88, 242704), (112, 190696), (121, 176512), (128, 166859), (154, 138688), (176, 121352), (197, 108416), (224, 95348), (242, 88256), (308, 69344), (352, 60676), (394, 54208), (448, 47674), (484, 44128), (616, 34672), (704, 30338), (788, 27104), (847, 25216), (896, 23837), (968, 22064), (1232, 17336), (1379, 15488), (1408, 15169), (1576, 13552), (1694, 12608), (1936, 11032), (2167, 9856), (2464, 8668), (2758, 7744), (3152, 6776), (3388, 6304), (3872, 5516), (4334, 4928)]