28787425

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:553

約数の個数: 24

約数和(自身を含む): 37209920

約数和(自身を除く): 8422495

約数列:

[1, 5, 25, 43, 61, 215, 305, 439, 1075, 1525, 2195, 2623, 10975, 13115, 18877, 26779, 65575, 94385, 133895, 471925, 669475, 1151497, 5757485, 28787425]

約数ペア:

[(1, 28787425), (5, 5757485), (25, 1151497), (43, 669475), (61, 471925), (215, 133895), (305, 94385), (439, 65575), (1075, 26779), (1525, 18877), (2195, 13115), (2623, 10975)]