28641056

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:226

約数の個数: 72

約数和(自身を含む): 63438480

約数和(自身を除く): 34797424

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 68, 76, 136, 152, 163, 272, 289, 304, 323, 326, 544, 578, 608, 646, 652, 1156, 1292, 1304, 2312, 2584, 2608, 2771, 3097, 4624, 5168, 5216, 5491, 5542, 6194, 9248, 10336, 10982, 11084, 12388, 21964, 22168, 24776, 43928, 44336, 47107, 49552, 52649, 87856, 88672, 94214, 99104, 105298, 175712, 188428, 210596, 376856, 421192, 753712, 842384, 895033, 1507424, 1684768, 1790066, 3580132, 7160264, 14320528, 28641056]

約数ペア:

[(1, 28641056), (2, 14320528), (4, 7160264), (8, 3580132), (16, 1790066), (17, 1684768), (19, 1507424), (32, 895033), (34, 842384), (38, 753712), (68, 421192), (76, 376856), (136, 210596), (152, 188428), (163, 175712), (272, 105298), (289, 99104), (304, 94214), (323, 88672), (326, 87856), (544, 52649), (578, 49552), (608, 47107), (646, 44336), (652, 43928), (1156, 24776), (1292, 22168), (1304, 21964), (2312, 12388), (2584, 11084), (2608, 10982), (2771, 10336), (3097, 9248), (4624, 6194), (5168, 5542), (5216, 5491)]