20842808

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7919}}^1$

素因数の和:7979

約数の個数: 32

約数和(自身を含む): 45619200

約数和(自身を除く): 24776392

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 7919, 15838, 31676, 55433, 63352, 110866, 221732, 372193, 443464, 744386, 1488772, 2605351, 2977544, 5210702, 10421404, 20842808]

約数ペア:

[(1, 20842808), (2, 10421404), (4, 5210702), (7, 2977544), (8, 2605351), (14, 1488772), (28, 744386), (47, 443464), (56, 372193), (94, 221732), (188, 110866), (329, 63352), (376, 55433), (658, 31676), (1316, 15838), (2632, 7919)]