166840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:151

約数の個数: 32

約数和(自身を含む): 388080

約数和(自身を除く): 221240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 97, 172, 194, 215, 344, 388, 430, 485, 776, 860, 970, 1720, 1940, 3880, 4171, 8342, 16684, 20855, 33368, 41710, 83420, 166840]

約数ペア:

[(1, 166840), (2, 83420), (4, 41710), (5, 33368), (8, 20855), (10, 16684), (20, 8342), (40, 4171), (43, 3880), (86, 1940), (97, 1720), (172, 970), (194, 860), (215, 776), (344, 485), (388, 430)]