21024399

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 32000256

約数和(自身を除く): 10975857

約数列:

[1, 3, 11, 33, 37, 67, 111, 201, 257, 407, 737, 771, 1221, 2211, 2479, 2827, 7437, 8481, 9509, 17219, 27269, 28527, 51657, 81807, 104599, 189409, 313797, 568227, 637103, 1911309, 7008133, 21024399]

約数ペア:

[(1, 21024399), (3, 7008133), (11, 1911309), (33, 637103), (37, 568227), (67, 313797), (111, 189409), (201, 104599), (257, 81807), (407, 51657), (737, 28527), (771, 27269), (1221, 17219), (2211, 9509), (2479, 8481), (2827, 7437)]