19851904

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{5003}}^1$

素因数の和:5048

約数の個数: 32

約数和(自身を含む): 40832640

約数和(自身を除く): 20980736

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 496, 992, 1984, 3968, 5003, 10006, 20012, 40024, 80048, 155093, 160096, 310186, 320192, 620372, 640384, 1240744, 2481488, 4962976, 9925952, 19851904]

約数ペア:

[(1, 19851904), (2, 9925952), (4, 4962976), (8, 2481488), (16, 1240744), (31, 640384), (32, 620372), (62, 320192), (64, 310186), (124, 160096), (128, 155093), (248, 80048), (496, 40024), (992, 20012), (1984, 10006), (3968, 5003)]