28405456

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:164

約数の個数: 80

約数和(自身を含む): 61871040

約数和(自身を除く): 33465584

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 43, 53, 76, 82, 86, 106, 152, 164, 172, 212, 304, 328, 344, 424, 656, 688, 779, 817, 848, 1007, 1558, 1634, 1763, 2014, 2173, 2279, 3116, 3268, 3526, 4028, 4346, 4558, 6232, 6536, 7052, 8056, 8692, 9116, 12464, 13072, 14104, 16112, 17384, 18232, 28208, 33497, 34768, 36464, 41287, 43301, 66994, 82574, 86602, 93439, 133988, 165148, 173204, 186878, 267976, 330296, 346408, 373756, 535952, 660592, 692816, 747512, 1495024, 1775341, 3550682, 7101364, 14202728, 28405456]

約数ペア:

[(1, 28405456), (2, 14202728), (4, 7101364), (8, 3550682), (16, 1775341), (19, 1495024), (38, 747512), (41, 692816), (43, 660592), (53, 535952), (76, 373756), (82, 346408), (86, 330296), (106, 267976), (152, 186878), (164, 173204), (172, 165148), (212, 133988), (304, 93439), (328, 86602), (344, 82574), (424, 66994), (656, 43301), (688, 41287), (779, 36464), (817, 34768), (848, 33497), (1007, 28208), (1558, 18232), (1634, 17384), (1763, 16112), (2014, 14104), (2173, 13072), (2279, 12464), (3116, 9116), (3268, 8692), (3526, 8056), (4028, 7052), (4346, 6536), (4558, 6232)]