21651184

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1063}}^1$

素因数の和:1157

約数の個数: 40

約数和(自身を含む): 44858240

約数和(自身を除く): 23207056

約数列:

[1, 2, 4, 8, 16, 19, 38, 67, 76, 134, 152, 268, 304, 536, 1063, 1072, 1273, 2126, 2546, 4252, 5092, 8504, 10184, 17008, 20197, 20368, 40394, 71221, 80788, 142442, 161576, 284884, 323152, 569768, 1139536, 1353199, 2706398, 5412796, 10825592, 21651184]

約数ペア:

[(1, 21651184), (2, 10825592), (4, 5412796), (8, 2706398), (16, 1353199), (19, 1139536), (38, 569768), (67, 323152), (76, 284884), (134, 161576), (152, 142442), (268, 80788), (304, 71221), (536, 40394), (1063, 20368), (1072, 20197), (1273, 17008), (2126, 10184), (2546, 8504), (4252, 5092)]