290906721

素因数分解:

$3^6\times 7^1\times {\mathrm{109}}^1\times {\mathrm{523}}^1$

素因数の和:657

約数の個数: 56

約数和(自身を含む): 504004160

約数和(自身を除く): 213097439

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 109, 189, 243, 327, 523, 567, 729, 763, 981, 1569, 1701, 2289, 2943, 3661, 4707, 5103, 6867, 8829, 10983, 14121, 20601, 26487, 32949, 42363, 57007, 61803, 79461, 98847, 127089, 171021, 185409, 296541, 381267, 399049, 513063, 556227, 889623, 1197147, 1539189, 2668869, 3591441, 4617567, 10774323, 13852701, 32322969, 41558103, 96968907, 290906721]

約数ペア:

[(1, 290906721), (3, 96968907), (7, 41558103), (9, 32322969), (21, 13852701), (27, 10774323), (63, 4617567), (81, 3591441), (109, 2668869), (189, 1539189), (243, 1197147), (327, 889623), (523, 556227), (567, 513063), (729, 399049), (763, 381267), (981, 296541), (1569, 185409), (1701, 171021), (2289, 127089), (2943, 98847), (3661, 79461), (4707, 61803), (5103, 57007), (6867, 42363), (8829, 32949), (10983, 26487), (14121, 20601)]