19779488

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 40771584

約数和(自身を除く): 20992096

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 127, 157, 248, 254, 314, 496, 508, 628, 992, 1016, 1256, 2032, 2512, 3937, 4064, 4867, 5024, 7874, 9734, 15748, 19468, 19939, 31496, 38936, 39878, 62992, 77872, 79756, 125984, 155744, 159512, 319024, 618109, 638048, 1236218, 2472436, 4944872, 9889744, 19779488]

約数ペア:

[(1, 19779488), (2, 9889744), (4, 4944872), (8, 2472436), (16, 1236218), (31, 638048), (32, 618109), (62, 319024), (124, 159512), (127, 155744), (157, 125984), (248, 79756), (254, 77872), (314, 62992), (496, 39878), (508, 38936), (628, 31496), (992, 19939), (1016, 19468), (1256, 15748), (2032, 9734), (2512, 7874), (3937, 5024), (4064, 4867)]