664013979

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{521}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 1031906304

約数和(自身を除く): 367892325

約数列:

[1, 3, 9, 23, 47, 69, 131, 141, 207, 393, 423, 521, 1081, 1179, 1563, 3013, 3243, 4689, 6157, 9039, 9729, 11983, 18471, 24487, 27117, 35949, 55413, 68251, 73461, 107847, 141611, 204753, 220383, 424833, 563201, 614259, 1274499, 1569773, 1689603, 3207797, 4709319, 5068809, 9623391, 14127957, 28870173, 73779331, 221337993, 664013979]

約数ペア:

[(1, 664013979), (3, 221337993), (9, 73779331), (23, 28870173), (47, 14127957), (69, 9623391), (131, 5068809), (141, 4709319), (207, 3207797), (393, 1689603), (423, 1569773), (521, 1274499), (1081, 614259), (1179, 563201), (1563, 424833), (3013, 220383), (3243, 204753), (4689, 141611), (6157, 107847), (9039, 73461), (9729, 68251), (11983, 55413), (18471, 35949), (24487, 27117)]