21387616

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1213}}^1$

素因数の和:1271

約数の個数: 48

約数和(自身を含む): 45889200

約数和(自身を除く): 24501584

約数列:

[1, 2, 4, 8, 16, 19, 29, 32, 38, 58, 76, 116, 152, 232, 304, 464, 551, 608, 928, 1102, 1213, 2204, 2426, 4408, 4852, 8816, 9704, 17632, 19408, 23047, 35177, 38816, 46094, 70354, 92188, 140708, 184376, 281416, 368752, 562832, 668363, 737504, 1125664, 1336726, 2673452, 5346904, 10693808, 21387616]

約数ペア:

[(1, 21387616), (2, 10693808), (4, 5346904), (8, 2673452), (16, 1336726), (19, 1125664), (29, 737504), (32, 668363), (38, 562832), (58, 368752), (76, 281416), (116, 184376), (152, 140708), (232, 92188), (304, 70354), (464, 46094), (551, 38816), (608, 35177), (928, 23047), (1102, 19408), (1213, 17632), (2204, 9704), (2426, 8816), (4408, 4852)]