21010545

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3359}}^1$

素因数の和:3509

約数の個数: 24

約数和(自身を含む): 36691200

約数和(自身を除く): 15680655

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3359, 6255, 10077, 16795, 30231, 50385, 151155, 466901, 1400703, 2334505, 4202109, 7003515, 21010545]

約数ペア:

[(1, 21010545), (3, 7003515), (5, 4202109), (9, 2334505), (15, 1400703), (45, 466901), (139, 151155), (417, 50385), (695, 30231), (1251, 16795), (2085, 10077), (3359, 6255)]