20519290372

素因数分解:

$2^2\times 7^3\times {\mathrm{97}}^1\times {\mathrm{154183}}^1$

素因数の和:154305

約数の個数: 48

約数和(自身を含む): 42308089600

約数和(自身を除く): 21788799228

約数列:

[1, 2, 4, 7, 14, 28, 49, 97, 98, 194, 196, 343, 388, 679, 686, 1358, 1372, 2716, 4753, 9506, 19012, 33271, 66542, 133084, 154183, 308366, 616732, 1079281, 2158562, 4317124, 7554967, 14955751, 15109934, 29911502, 30219868, 52884769, 59823004, 104690257, 105769538, 209380514, 211539076, 418761028, 732831799, 1465663598, 2931327196, 5129822593, 10259645186, 20519290372]

約数ペア:

[(1, 20519290372), (2, 10259645186), (4, 5129822593), (7, 2931327196), (14, 1465663598), (28, 732831799), (49, 418761028), (97, 211539076), (98, 209380514), (194, 105769538), (196, 104690257), (343, 59823004), (388, 52884769), (679, 30219868), (686, 29911502), (1358, 15109934), (1372, 14955751), (2716, 7554967), (4753, 4317124), (9506, 2158562), (19012, 1079281), (33271, 616732), (66542, 308366), (133084, 154183)]