18302921

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{487}}^1$

素因数の和:573

約数の個数: 24

約数和(自身を含む): 23365440

約数和(自身を除く): 5062519

約数列:

[1, 7, 13, 49, 59, 91, 413, 487, 637, 767, 2891, 3409, 5369, 6331, 23863, 28733, 37583, 44317, 201131, 310219, 373529, 1407917, 2614703, 18302921]

約数ペア:

[(1, 18302921), (7, 2614703), (13, 1407917), (49, 373529), (59, 310219), (91, 201131), (413, 44317), (487, 37583), (637, 28733), (767, 23863), (2891, 6331), (3409, 5369)]