51640420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:245

約数の個数: 96

約数和(自身を含む): 124185600

約数和(自身を除く): 72545180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 43, 52, 62, 65, 86, 124, 130, 149, 155, 172, 215, 260, 298, 310, 403, 430, 559, 596, 620, 745, 806, 860, 1118, 1333, 1490, 1612, 1937, 2015, 2236, 2666, 2795, 2980, 3874, 4030, 4619, 5332, 5590, 6407, 6665, 7748, 8060, 9238, 9685, 11180, 12814, 13330, 17329, 18476, 19370, 23095, 25628, 26660, 32035, 34658, 38740, 46190, 60047, 64070, 69316, 83291, 86645, 92380, 120094, 128140, 166582, 173290, 198617, 240188, 300235, 333164, 346580, 397234, 416455, 600470, 794468, 832910, 993085, 1200940, 1665820, 1986170, 2582021, 3972340, 5164042, 10328084, 12910105, 25820210, 51640420]

約数ペア:

[(1, 51640420), (2, 25820210), (4, 12910105), (5, 10328084), (10, 5164042), (13, 3972340), (20, 2582021), (26, 1986170), (31, 1665820), (43, 1200940), (52, 993085), (62, 832910), (65, 794468), (86, 600470), (124, 416455), (130, 397234), (149, 346580), (155, 333164), (172, 300235), (215, 240188), (260, 198617), (298, 173290), (310, 166582), (403, 128140), (430, 120094), (559, 92380), (596, 86645), (620, 83291), (745, 69316), (806, 64070), (860, 60047), (1118, 46190), (1333, 38740), (1490, 34658), (1612, 32035), (1937, 26660), (2015, 25628), (2236, 23095), (2666, 19370), (2795, 18476), (2980, 17329), (3874, 13330), (4030, 12814), (4619, 11180), (5332, 9685), (5590, 9238), (6407, 8060), (6665, 7748)]