21000718486

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1\times {\mathrm{1741}}^1$

素因数の和:2149

約数の個数: 64

約数和(自身を含む): 36158234112

約数和(自身を除く): 15157515626

約数列:

[1, 2, 11, 22, 41, 43, 82, 86, 311, 451, 473, 622, 902, 946, 1741, 1763, 3421, 3482, 3526, 6842, 12751, 13373, 19151, 19393, 25502, 26746, 38302, 38786, 71381, 74863, 140261, 142762, 147103, 149726, 280522, 294206, 541451, 548293, 785191, 823493, 1082902, 1096586, 1570382, 1646986, 3069383, 5955961, 6031223, 6138766, 11911922, 12062446, 22199491, 23282393, 33763213, 44398982, 46564786, 67526426, 244194401, 256106323, 488388802, 512212646, 954578113, 1909156226, 10500359243, 21000718486]

約数ペア:

[(1, 21000718486), (2, 10500359243), (11, 1909156226), (22, 954578113), (41, 512212646), (43, 488388802), (82, 256106323), (86, 244194401), (311, 67526426), (451, 46564786), (473, 44398982), (622, 33763213), (902, 23282393), (946, 22199491), (1741, 12062446), (1763, 11911922), (3421, 6138766), (3482, 6031223), (3526, 5955961), (6842, 3069383), (12751, 1646986), (13373, 1570382), (19151, 1096586), (19393, 1082902), (25502, 823493), (26746, 785191), (38302, 548293), (38786, 541451), (71381, 294206), (74863, 280522), (140261, 149726), (142762, 147103)]