21779725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2731}}^1$

素因数の和:2781

約数の個数: 24

約数和(自身を含む): 30489120

約数和(自身を除く): 8709395

約数列:

[1, 5, 11, 25, 29, 55, 145, 275, 319, 725, 1595, 2731, 7975, 13655, 30041, 68275, 79199, 150205, 395995, 751025, 871189, 1979975, 4355945, 21779725]

約数ペア:

[(1, 21779725), (5, 4355945), (11, 1979975), (25, 871189), (29, 751025), (55, 395995), (145, 150205), (275, 79199), (319, 68275), (725, 30041), (1595, 13655), (2731, 7975)]