20401425

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8243}}^1$

素因数の和:8270

約数の個数: 36

約数和(自身を含む): 39867984

約数和(自身を除く): 19466559

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8243, 24729, 41215, 74187, 90673, 123645, 206075, 272019, 370935, 453365, 618225, 816057, 1360095, 1854675, 2266825, 4080285, 6800475, 20401425]

約数ペア:

[(1, 20401425), (3, 6800475), (5, 4080285), (9, 2266825), (11, 1854675), (15, 1360095), (25, 816057), (33, 618225), (45, 453365), (55, 370935), (75, 272019), (99, 206075), (165, 123645), (225, 90673), (275, 74187), (495, 41215), (825, 24729), (2475, 8243)]