20308425

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 35795328

約数和(自身を除く): 15486903

約数列:

[1, 3, 5, 15, 23, 25, 61, 69, 75, 115, 183, 193, 305, 345, 575, 579, 915, 965, 1403, 1525, 1725, 2895, 4209, 4439, 4575, 4825, 7015, 11773, 13317, 14475, 21045, 22195, 35075, 35319, 58865, 66585, 105225, 110975, 176595, 270779, 294325, 332925, 812337, 882975, 1353895, 4061685, 6769475, 20308425]

約数ペア:

[(1, 20308425), (3, 6769475), (5, 4061685), (15, 1353895), (23, 882975), (25, 812337), (61, 332925), (69, 294325), (75, 270779), (115, 176595), (183, 110975), (193, 105225), (305, 66585), (345, 58865), (575, 35319), (579, 35075), (915, 22195), (965, 21045), (1403, 14475), (1525, 13317), (1725, 11773), (2895, 7015), (4209, 4825), (4439, 4575)]