21880125

素因数分解:

$3^4\times 5^3\times {\mathrm{2161}}^1$

素因数の和:2188

約数の個数: 40

約数和(自身を含む): 40809912

約数和(自身を除く): 18929787

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 2025, 2161, 3375, 6483, 10125, 10805, 19449, 32415, 54025, 58347, 97245, 162075, 175041, 270125, 291735, 486225, 810375, 875205, 1458675, 2431125, 4376025, 7293375, 21880125]

約数ペア:

[(1, 21880125), (3, 7293375), (5, 4376025), (9, 2431125), (15, 1458675), (25, 875205), (27, 810375), (45, 486225), (75, 291735), (81, 270125), (125, 175041), (135, 162075), (225, 97245), (375, 58347), (405, 54025), (675, 32415), (1125, 19449), (2025, 10805), (2161, 10125), (3375, 6483)]