20820142

素因数分解:

$2^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{7549}}^1$

素因数の和:7755

約数の個数: 16

約数和(自身を含む): 35877600

約数和(自身を除く): 15057458

約数列:

[1, 2, 7, 14, 197, 394, 1379, 2758, 7549, 15098, 52843, 105686, 1487153, 2974306, 10410071, 20820142]

約数ペア:

[(1, 20820142), (2, 10410071), (7, 2974306), (14, 1487153), (197, 105686), (394, 52843), (1379, 15098), (2758, 7549)]