8143420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{9931}}^1$

素因数の和:9981

約数の個数: 24

約数和(自身を含む): 17520048

約数和(自身を除く): 9376628

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 9931, 19862, 39724, 49655, 99310, 198620, 407171, 814342, 1628684, 2035855, 4071710, 8143420]

約数ペア:

[(1, 8143420), (2, 4071710), (4, 2035855), (5, 1628684), (10, 814342), (20, 407171), (41, 198620), (82, 99310), (164, 49655), (205, 39724), (410, 19862), (820, 9931)]