20818238

素因数分解:

$2^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{2689}}^1$

素因数の和:2784

約数の個数: 24

約数和(自身を含む): 36799200

約数和(自身を除く): 15980962

約数列:

[1, 2, 7, 14, 49, 79, 98, 158, 553, 1106, 2689, 3871, 5378, 7742, 18823, 37646, 131761, 212431, 263522, 424862, 1487017, 2974034, 10409119, 20818238]

約数ペア:

[(1, 20818238), (2, 10409119), (7, 2974034), (14, 1487017), (49, 424862), (79, 263522), (98, 212431), (158, 131761), (553, 37646), (1106, 18823), (2689, 7742), (3871, 5378)]