20387584

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^1\times {\mathrm{367}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 48140288

約数和(自身を除く): 27752704

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 256, 367, 434, 448, 496, 734, 868, 896, 992, 1468, 1736, 1792, 1984, 2569, 2936, 3472, 3968, 5138, 5872, 6944, 7936, 10276, 11377, 11744, 13888, 20552, 22754, 23488, 27776, 41104, 45508, 46976, 55552, 79639, 82208, 91016, 93952, 159278, 164416, 182032, 318556, 328832, 364064, 637112, 657664, 728128, 1274224, 1456256, 2548448, 2912512, 5096896, 10193792, 20387584]

約数ペア:

[(1, 20387584), (2, 10193792), (4, 5096896), (7, 2912512), (8, 2548448), (14, 1456256), (16, 1274224), (28, 728128), (31, 657664), (32, 637112), (56, 364064), (62, 328832), (64, 318556), (112, 182032), (124, 164416), (128, 159278), (217, 93952), (224, 91016), (248, 82208), (256, 79639), (367, 55552), (434, 46976), (448, 45508), (496, 41104), (734, 27776), (868, 23488), (896, 22754), (992, 20552), (1468, 13888), (1736, 11744), (1792, 11377), (1984, 10276), (2569, 7936), (2936, 6944), (3472, 5872), (3968, 5138)]