21000882826

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1\times {\mathrm{9221}}^1$

素因数の和:9907

約数の個数: 64

約数和(自身を含む): 41050146816

約数和(自身を除く): 20049263990

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 77, 154, 161, 253, 322, 506, 643, 1286, 1771, 3542, 4501, 7073, 9002, 9221, 14146, 14789, 18442, 29578, 49511, 64547, 99022, 101431, 103523, 129094, 162679, 202862, 207046, 212083, 325358, 424166, 710017, 1138753, 1420034, 1484581, 2277506, 2332913, 2969162, 4665826, 5929103, 11858206, 16330391, 32660782, 41503721, 65220133, 83007442, 130440266, 136369369, 272738738, 456540931, 913081862, 954585583, 1500063059, 1909171166, 3000126118, 10500441413, 21000882826]

約数ペア:

[(1, 21000882826), (2, 10500441413), (7, 3000126118), (11, 1909171166), (14, 1500063059), (22, 954585583), (23, 913081862), (46, 456540931), (77, 272738738), (154, 136369369), (161, 130440266), (253, 83007442), (322, 65220133), (506, 41503721), (643, 32660782), (1286, 16330391), (1771, 11858206), (3542, 5929103), (4501, 4665826), (7073, 2969162), (9002, 2332913), (9221, 2277506), (14146, 1484581), (14789, 1420034), (18442, 1138753), (29578, 710017), (49511, 424166), (64547, 325358), (99022, 212083), (101431, 207046), (103523, 202862), (129094, 162679)]