198179920

素因数分解:

$2^4\times 5^1\times {\mathrm{2477249}}^1$

素因数の和:2477262

約数の個数: 20

約数和(自身を含む): 460768500

約数和(自身を除く): 262588580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2477249, 4954498, 9908996, 12386245, 19817992, 24772490, 39635984, 49544980, 99089960, 198179920]

約数ペア:

[(1, 198179920), (2, 99089960), (4, 49544980), (5, 39635984), (8, 24772490), (10, 19817992), (16, 12386245), (20, 9908996), (40, 4954498), (80, 2477249)]