217987623

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{6257}}^1$

素因数の和:6356

約数の個数: 36

約数和(自身を含む): 370974240

約数和(自身を除く): 152986617

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 553, 711, 1659, 3871, 4977, 6257, 11613, 18771, 34839, 43799, 56313, 131397, 306593, 394191, 494303, 919779, 1482909, 2759337, 3460121, 4448727, 10380363, 24220847, 31141089, 72662541, 217987623]

約数ペア:

[(1, 217987623), (3, 72662541), (7, 31141089), (9, 24220847), (21, 10380363), (49, 4448727), (63, 3460121), (79, 2759337), (147, 1482909), (237, 919779), (441, 494303), (553, 394191), (711, 306593), (1659, 131397), (3871, 56313), (4977, 43799), (6257, 34839), (11613, 18771)]