21461355

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2789}}^1$

素因数の和:2825

約数の個数: 40

約数和(自身を含む): 40510800

約数和(自身を除く): 19049445

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2789, 7695, 8367, 13945, 25101, 41835, 52991, 75303, 125505, 158973, 225909, 264955, 376515, 476919, 794865, 1129545, 1430757, 2384595, 4292271, 7153785, 21461355]

約数ペア:

[(1, 21461355), (3, 7153785), (5, 4292271), (9, 2384595), (15, 1430757), (19, 1129545), (27, 794865), (45, 476919), (57, 376515), (81, 264955), (95, 225909), (135, 158973), (171, 125505), (285, 75303), (405, 52991), (513, 41835), (855, 25101), (1539, 13945), (2565, 8367), (2789, 7695)]