135880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:133

約数の個数: 32

約数和(自身を含む): 316800

約数和(自身を除く): 180920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 79, 86, 158, 172, 215, 316, 344, 395, 430, 632, 790, 860, 1580, 1720, 3160, 3397, 6794, 13588, 16985, 27176, 33970, 67940, 135880]

約数ペア:

[(1, 135880), (2, 67940), (4, 33970), (5, 27176), (8, 16985), (10, 13588), (20, 6794), (40, 3397), (43, 3160), (79, 1720), (86, 1580), (158, 860), (172, 790), (215, 632), (316, 430), (344, 395)]