2019997240

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{31741}}^1$

素因数の和:31832

約数の個数: 64

約数和(自身を含む): 4776536160

約数和(自身を除く): 2756538920

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 43, 74, 86, 148, 172, 185, 215, 296, 344, 370, 430, 740, 860, 1480, 1591, 1720, 3182, 6364, 7955, 12728, 15910, 31741, 31820, 63482, 63640, 126964, 158705, 253928, 317410, 634820, 1174417, 1269640, 1364863, 2348834, 2729726, 4697668, 5459452, 5872085, 6824315, 9395336, 10918904, 11744170, 13648630, 23488340, 27297260, 46976680, 50499931, 54594520, 100999862, 201999724, 252499655, 403999448, 504999310, 1009998620, 2019997240]

約数ペア:

[(1, 2019997240), (2, 1009998620), (4, 504999310), (5, 403999448), (8, 252499655), (10, 201999724), (20, 100999862), (37, 54594520), (40, 50499931), (43, 46976680), (74, 27297260), (86, 23488340), (148, 13648630), (172, 11744170), (185, 10918904), (215, 9395336), (296, 6824315), (344, 5872085), (370, 5459452), (430, 4697668), (740, 2729726), (860, 2348834), (1480, 1364863), (1591, 1269640), (1720, 1174417), (3182, 634820), (6364, 317410), (7955, 253928), (12728, 158705), (15910, 126964), (31741, 63640), (31820, 63482)]