85781560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{941}}^1$

素因数の和:1048

約数の個数: 64

約数和(自身を含む): 201437280

約数和(自身を除く): 115655720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 53, 86, 106, 172, 212, 215, 265, 344, 424, 430, 530, 860, 941, 1060, 1720, 1882, 2120, 2279, 3764, 4558, 4705, 7528, 9116, 9410, 11395, 18232, 18820, 22790, 37640, 40463, 45580, 49873, 80926, 91160, 99746, 161852, 199492, 202315, 249365, 323704, 398984, 404630, 498730, 809260, 997460, 1618520, 1994920, 2144539, 4289078, 8578156, 10722695, 17156312, 21445390, 42890780, 85781560]

約数ペア:

[(1, 85781560), (2, 42890780), (4, 21445390), (5, 17156312), (8, 10722695), (10, 8578156), (20, 4289078), (40, 2144539), (43, 1994920), (53, 1618520), (86, 997460), (106, 809260), (172, 498730), (212, 404630), (215, 398984), (265, 323704), (344, 249365), (424, 202315), (430, 199492), (530, 161852), (860, 99746), (941, 91160), (1060, 80926), (1720, 49873), (1882, 45580), (2120, 40463), (2279, 37640), (3764, 22790), (4558, 18820), (4705, 18232), (7528, 11395), (9116, 9410)]