21661904

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:264

約数の個数: 60

約数和(自身を含む): 47101152

約数和(自身を除く): 25439248

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 67, 88, 121, 134, 167, 176, 242, 268, 334, 484, 536, 668, 737, 968, 1072, 1336, 1474, 1837, 1936, 2672, 2948, 3674, 5896, 7348, 8107, 11189, 11792, 14696, 16214, 20207, 22378, 29392, 32428, 40414, 44756, 64856, 80828, 89512, 123079, 129712, 161656, 179024, 246158, 323312, 492316, 984632, 1353869, 1969264, 2707738, 5415476, 10830952, 21661904]

約数ペア:

[(1, 21661904), (2, 10830952), (4, 5415476), (8, 2707738), (11, 1969264), (16, 1353869), (22, 984632), (44, 492316), (67, 323312), (88, 246158), (121, 179024), (134, 161656), (167, 129712), (176, 123079), (242, 89512), (268, 80828), (334, 64856), (484, 44756), (536, 40414), (668, 32428), (737, 29392), (968, 22378), (1072, 20207), (1336, 16214), (1474, 14696), (1837, 11792), (1936, 11189), (2672, 8107), (2948, 7348), (3674, 5896)]