168020420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{3181}}^1$

素因数の和:3348

約数の個数: 48

約数和(自身を含む): 374203200

約数和(自身を除く): 206182780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 278, 380, 556, 695, 1390, 2641, 2780, 3181, 5282, 6362, 10564, 12724, 13205, 15905, 26410, 31810, 52820, 60439, 63620, 120878, 241756, 302195, 442159, 604390, 884318, 1208780, 1768636, 2210795, 4421590, 8401021, 8843180, 16802042, 33604084, 42005105, 84010210, 168020420]

約数ペア:

[(1, 168020420), (2, 84010210), (4, 42005105), (5, 33604084), (10, 16802042), (19, 8843180), (20, 8401021), (38, 4421590), (76, 2210795), (95, 1768636), (139, 1208780), (190, 884318), (278, 604390), (380, 442159), (556, 302195), (695, 241756), (1390, 120878), (2641, 63620), (2780, 60439), (3181, 52820), (5282, 31810), (6362, 26410), (10564, 15905), (12724, 13205)]