20499584

素因数分解:

$2^7\times 7^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 47295360

約数和(自身を除く): 26795776

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 137, 167, 224, 274, 334, 448, 548, 668, 896, 959, 1096, 1169, 1336, 1918, 2192, 2338, 2672, 3836, 4384, 4676, 5344, 7672, 8768, 9352, 10688, 15344, 17536, 18704, 21376, 22879, 30688, 37408, 45758, 61376, 74816, 91516, 122752, 149632, 160153, 183032, 320306, 366064, 640612, 732128, 1281224, 1464256, 2562448, 2928512, 5124896, 10249792, 20499584]

約数ペア:

[(1, 20499584), (2, 10249792), (4, 5124896), (7, 2928512), (8, 2562448), (14, 1464256), (16, 1281224), (28, 732128), (32, 640612), (56, 366064), (64, 320306), (112, 183032), (128, 160153), (137, 149632), (167, 122752), (224, 91516), (274, 74816), (334, 61376), (448, 45758), (548, 37408), (668, 30688), (896, 22879), (959, 21376), (1096, 18704), (1169, 17536), (1336, 15344), (1918, 10688), (2192, 9352), (2338, 8768), (2672, 7672), (3836, 5344), (4384, 4676)]