12928120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7883}}^1$

素因数の和:7935

約数の個数: 32

約数和(自身を含む): 29801520

約数和(自身を除く): 16873400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 7883, 15766, 31532, 39415, 63064, 78830, 157660, 315320, 323203, 646406, 1292812, 1616015, 2585624, 3232030, 6464060, 12928120]

約数ペア:

[(1, 12928120), (2, 6464060), (4, 3232030), (5, 2585624), (8, 1616015), (10, 1292812), (20, 646406), (40, 323203), (41, 315320), (82, 157660), (164, 78830), (205, 63064), (328, 39415), (410, 31532), (820, 15766), (1640, 7883)]