19774280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 27503800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 431, 620, 740, 862, 1147, 1240, 1480, 1724, 2155, 2294, 3448, 4310, 4588, 5735, 8620, 9176, 11470, 13361, 15947, 17240, 22940, 26722, 31894, 45880, 53444, 63788, 66805, 79735, 106888, 127576, 133610, 159470, 267220, 318940, 494357, 534440, 637880, 988714, 1977428, 2471785, 3954856, 4943570, 9887140, 19774280]

約数ペア:

[(1, 19774280), (2, 9887140), (4, 4943570), (5, 3954856), (8, 2471785), (10, 1977428), (20, 988714), (31, 637880), (37, 534440), (40, 494357), (62, 318940), (74, 267220), (124, 159470), (148, 133610), (155, 127576), (185, 106888), (248, 79735), (296, 66805), (310, 63788), (370, 53444), (431, 45880), (620, 31894), (740, 26722), (862, 22940), (1147, 17240), (1240, 15947), (1480, 13361), (1724, 11470), (2155, 9176), (2294, 8620), (3448, 5735), (4310, 4588)]