20280365

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 30533760

約数和(自身を除く): 10253395

約数列:

[1, 5, 7, 23, 35, 49, 59, 61, 115, 161, 245, 295, 305, 413, 427, 805, 1127, 1357, 1403, 2065, 2135, 2891, 2989, 3599, 5635, 6785, 7015, 9499, 9821, 14455, 14945, 17995, 25193, 47495, 49105, 66493, 68747, 82777, 125965, 176351, 332465, 343735, 413885, 579439, 881755, 2897195, 4056073, 20280365]

約数ペア:

[(1, 20280365), (5, 4056073), (7, 2897195), (23, 881755), (35, 579439), (49, 413885), (59, 343735), (61, 332465), (115, 176351), (161, 125965), (245, 82777), (295, 68747), (305, 66493), (413, 49105), (427, 47495), (805, 25193), (1127, 17995), (1357, 14945), (1403, 14455), (2065, 9821), (2135, 9499), (2891, 7015), (2989, 6785), (3599, 5635)]