990881024

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^1\times {\mathrm{17837}}^1$

素因数の和:17891

約数の個数: 72

約数和(自身を含む): 2333495808

約数和(自身を除く): 1342614784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 256, 434, 448, 496, 868, 896, 992, 1736, 1792, 1984, 3472, 3968, 6944, 7936, 13888, 17837, 27776, 35674, 55552, 71348, 124859, 142696, 249718, 285392, 499436, 552947, 570784, 998872, 1105894, 1141568, 1997744, 2211788, 2283136, 3870629, 3995488, 4423576, 4566272, 7741258, 7990976, 8847152, 15482516, 15981952, 17694304, 30965032, 31963904, 35388608, 61930064, 70777216, 123860128, 141554432, 247720256, 495440512, 990881024]

約数ペア:

[(1, 990881024), (2, 495440512), (4, 247720256), (7, 141554432), (8, 123860128), (14, 70777216), (16, 61930064), (28, 35388608), (31, 31963904), (32, 30965032), (56, 17694304), (62, 15981952), (64, 15482516), (112, 8847152), (124, 7990976), (128, 7741258), (217, 4566272), (224, 4423576), (248, 3995488), (256, 3870629), (434, 2283136), (448, 2211788), (496, 1997744), (868, 1141568), (896, 1105894), (992, 998872), (1736, 570784), (1792, 552947), (1984, 499436), (3472, 285392), (3968, 249718), (6944, 142696), (7936, 124859), (13888, 71348), (17837, 55552), (27776, 35674)]