256989271

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 346459680

約数和(自身を除く): 89470409

約数列:

[1, 7, 11, 29, 41, 49, 77, 203, 287, 319, 401, 451, 539, 1189, 1421, 2009, 2233, 2807, 3157, 4411, 8323, 11629, 13079, 15631, 16441, 19649, 22099, 30877, 58261, 81403, 91553, 115087, 127919, 180851, 216139, 476789, 569821, 640871, 805609, 895433, 1265957, 3337523, 5244679, 6268031, 8861699, 23362661, 36712753, 256989271]

約数ペア:

[(1, 256989271), (7, 36712753), (11, 23362661), (29, 8861699), (41, 6268031), (49, 5244679), (77, 3337523), (203, 1265957), (287, 895433), (319, 805609), (401, 640871), (451, 569821), (539, 476789), (1189, 216139), (1421, 180851), (2009, 127919), (2233, 115087), (2807, 91553), (3157, 81403), (4411, 58261), (8323, 30877), (11629, 22099), (13079, 19649), (15631, 16441)]