71908040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{431}}^1$

素因数の和:582

約数の個数: 64

約数和(自身を含む): 167650560

約数和(自身を除く): 95742520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 97, 172, 194, 215, 344, 388, 430, 431, 485, 776, 860, 862, 970, 1720, 1724, 1940, 2155, 3448, 3880, 4171, 4310, 8342, 8620, 16684, 17240, 18533, 20855, 33368, 37066, 41710, 41807, 74132, 83420, 83614, 92665, 148264, 166840, 167228, 185330, 209035, 334456, 370660, 418070, 741320, 836140, 1672280, 1797701, 3595402, 7190804, 8988505, 14381608, 17977010, 35954020, 71908040]

約数ペア:

[(1, 71908040), (2, 35954020), (4, 17977010), (5, 14381608), (8, 8988505), (10, 7190804), (20, 3595402), (40, 1797701), (43, 1672280), (86, 836140), (97, 741320), (172, 418070), (194, 370660), (215, 334456), (344, 209035), (388, 185330), (430, 167228), (431, 166840), (485, 148264), (776, 92665), (860, 83614), (862, 83420), (970, 74132), (1720, 41807), (1724, 41710), (1940, 37066), (2155, 33368), (3448, 20855), (3880, 18533), (4171, 17240), (4310, 16684), (8342, 8620)]