19900384

素因数分解:

$2^5\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1217}}^1$

素因数の和:1307

約数の個数: 48

約数和(自身を含む): 45426528

約数和(自身を除く): 25526144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 73, 112, 146, 224, 292, 511, 584, 1022, 1168, 1217, 2044, 2336, 2434, 4088, 4868, 8176, 8519, 9736, 16352, 17038, 19472, 34076, 38944, 68152, 88841, 136304, 177682, 272608, 355364, 621887, 710728, 1243774, 1421456, 2487548, 2842912, 4975096, 9950192, 19900384]

約数ペア:

[(1, 19900384), (2, 9950192), (4, 4975096), (7, 2842912), (8, 2487548), (14, 1421456), (16, 1243774), (28, 710728), (32, 621887), (56, 355364), (73, 272608), (112, 177682), (146, 136304), (224, 88841), (292, 68152), (511, 38944), (584, 34076), (1022, 19472), (1168, 17038), (1217, 16352), (2044, 9736), (2336, 8519), (2434, 8176), (4088, 4868)]