20781689448

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{66607979}}^1$

素因数の和:66608001

約数の個数: 32

約数和(自身を含む): 55950703200

約数和(自身を除く): 35169013752

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 66607979, 133215958, 199823937, 266431916, 399647874, 532863832, 799295748, 865903727, 1598591496, 1731807454, 2597711181, 3463614908, 5195422362, 6927229816, 10390844724, 20781689448]

約数ペア:

[(1, 20781689448), (2, 10390844724), (3, 6927229816), (4, 5195422362), (6, 3463614908), (8, 2597711181), (12, 1731807454), (13, 1598591496), (24, 865903727), (26, 799295748), (39, 532863832), (52, 399647874), (78, 266431916), (104, 199823937), (156, 133215958), (312, 66607979)]