21130824

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:211

約数の個数: 128

約数和(自身を含む): 63866880

約数和(自身を除く): 42736056

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 33, 39, 44, 47, 52, 66, 78, 88, 94, 104, 131, 132, 141, 143, 156, 188, 262, 264, 282, 286, 312, 376, 393, 429, 517, 524, 564, 572, 611, 786, 858, 1034, 1048, 1128, 1144, 1222, 1441, 1551, 1572, 1703, 1716, 1833, 2068, 2444, 2882, 3102, 3144, 3406, 3432, 3666, 4136, 4323, 4888, 5109, 5764, 6157, 6204, 6721, 6812, 7332, 8646, 10218, 11528, 12314, 12408, 13442, 13624, 14664, 17292, 18471, 18733, 20163, 20436, 24628, 26884, 34584, 36942, 37466, 40326, 40872, 49256, 53768, 56199, 67727, 73884, 74932, 80041, 80652, 112398, 135454, 147768, 149864, 160082, 161304, 203181, 224796, 240123, 270908, 320164, 406362, 449592, 480246, 541816, 640328, 812724, 880451, 960492, 1625448, 1760902, 1920984, 2641353, 3521804, 5282706, 7043608, 10565412, 21130824]

約数ペア:

[(1, 21130824), (2, 10565412), (3, 7043608), (4, 5282706), (6, 3521804), (8, 2641353), (11, 1920984), (12, 1760902), (13, 1625448), (22, 960492), (24, 880451), (26, 812724), (33, 640328), (39, 541816), (44, 480246), (47, 449592), (52, 406362), (66, 320164), (78, 270908), (88, 240123), (94, 224796), (104, 203181), (131, 161304), (132, 160082), (141, 149864), (143, 147768), (156, 135454), (188, 112398), (262, 80652), (264, 80041), (282, 74932), (286, 73884), (312, 67727), (376, 56199), (393, 53768), (429, 49256), (517, 40872), (524, 40326), (564, 37466), (572, 36942), (611, 34584), (786, 26884), (858, 24628), (1034, 20436), (1048, 20163), (1128, 18733), (1144, 18471), (1222, 17292), (1441, 14664), (1551, 13624), (1572, 13442), (1703, 12408), (1716, 12314), (1833, 11528), (2068, 10218), (2444, 8646), (2882, 7332), (3102, 6812), (3144, 6721), (3406, 6204), (3432, 6157), (3666, 5764), (4136, 5109), (4323, 4888)]