21440128

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 24827072

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 59, 64, 68, 118, 128, 136, 167, 236, 272, 334, 472, 544, 668, 944, 1003, 1088, 1336, 1888, 2006, 2176, 2672, 2839, 3776, 4012, 5344, 5678, 7552, 8024, 9853, 10688, 11356, 16048, 19706, 21376, 22712, 32096, 39412, 45424, 64192, 78824, 90848, 128384, 157648, 167501, 181696, 315296, 335002, 363392, 630592, 670004, 1261184, 1340008, 2680016, 5360032, 10720064, 21440128]

約数ペア:

[(1, 21440128), (2, 10720064), (4, 5360032), (8, 2680016), (16, 1340008), (17, 1261184), (32, 670004), (34, 630592), (59, 363392), (64, 335002), (68, 315296), (118, 181696), (128, 167501), (136, 157648), (167, 128384), (236, 90848), (272, 78824), (334, 64192), (472, 45424), (544, 39412), (668, 32096), (944, 22712), (1003, 21376), (1088, 19706), (1336, 16048), (1888, 11356), (2006, 10688), (2176, 9853), (2672, 8024), (2839, 7552), (3776, 5678), (4012, 5344)]