18759904

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:463

約数の個数: 48

約数和(自身を含む): 39191040

約数和(自身を除く): 20431136

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 71, 92, 142, 184, 284, 359, 368, 568, 718, 736, 1136, 1436, 1633, 2272, 2872, 3266, 5744, 6532, 8257, 11488, 13064, 16514, 25489, 26128, 33028, 50978, 52256, 66056, 101956, 132112, 203912, 264224, 407824, 586247, 815648, 1172494, 2344988, 4689976, 9379952, 18759904]

約数ペア:

[(1, 18759904), (2, 9379952), (4, 4689976), (8, 2344988), (16, 1172494), (23, 815648), (32, 586247), (46, 407824), (71, 264224), (92, 203912), (142, 132112), (184, 101956), (284, 66056), (359, 52256), (368, 50978), (568, 33028), (718, 26128), (736, 25489), (1136, 16514), (1436, 13064), (1633, 11488), (2272, 8257), (2872, 6532), (3266, 5744)]