638560256

素因数分解:

$2^{11}\times {\mathrm{17}}^1\times {\mathrm{18341}}^1$

素因数の和:18380

約数の個数: 48

約数和(自身を含む): 1351988820

約数和(自身を除く): 713428564

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 272, 512, 544, 1024, 1088, 2048, 2176, 4352, 8704, 17408, 18341, 34816, 36682, 73364, 146728, 293456, 311797, 586912, 623594, 1173824, 1247188, 2347648, 2494376, 4695296, 4988752, 9390592, 9977504, 18781184, 19955008, 37562368, 39910016, 79820032, 159640064, 319280128, 638560256]

約数ペア:

[(1, 638560256), (2, 319280128), (4, 159640064), (8, 79820032), (16, 39910016), (17, 37562368), (32, 19955008), (34, 18781184), (64, 9977504), (68, 9390592), (128, 4988752), (136, 4695296), (256, 2494376), (272, 2347648), (512, 1247188), (544, 1173824), (1024, 623594), (1088, 586912), (2048, 311797), (2176, 293456), (4352, 146728), (8704, 73364), (17408, 36682), (18341, 34816)]