28819580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{509}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 64260000

約数和(自身を除く): 35440420

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 149, 190, 298, 380, 509, 596, 745, 1018, 1490, 2036, 2545, 2831, 2980, 5090, 5662, 9671, 10180, 11324, 14155, 19342, 28310, 38684, 48355, 56620, 75841, 96710, 151682, 193420, 303364, 379205, 758410, 1440979, 1516820, 2881958, 5763916, 7204895, 14409790, 28819580]

約数ペア:

[(1, 28819580), (2, 14409790), (4, 7204895), (5, 5763916), (10, 2881958), (19, 1516820), (20, 1440979), (38, 758410), (76, 379205), (95, 303364), (149, 193420), (190, 151682), (298, 96710), (380, 75841), (509, 56620), (596, 48355), (745, 38684), (1018, 28310), (1490, 19342), (2036, 14155), (2545, 11324), (2831, 10180), (2980, 9671), (5090, 5662)]