21294405

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43019}}^1$

素因数の和:43041

約数の個数: 24

約数和(自身を含む): 40266720

約数和(自身を除く): 18972315

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 43019, 129057, 215095, 387171, 473209, 645285, 1419627, 1935855, 2366045, 4258881, 7098135, 21294405]

約数ペア:

[(1, 21294405), (3, 7098135), (5, 4258881), (9, 2366045), (11, 1935855), (15, 1419627), (33, 645285), (45, 473209), (55, 387171), (99, 215095), (165, 129057), (495, 43019)]