20483960

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{1493}}^1$

素因数の和:1525

約数の個数: 64

約数和(自身を含む): 53784000

約数和(自身を除く): 33300040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1493, 1715, 1960, 2744, 2986, 3430, 5972, 6860, 7465, 10451, 11944, 13720, 14930, 20902, 29860, 41804, 52255, 59720, 73157, 83608, 104510, 146314, 209020, 292628, 365785, 418040, 512099, 585256, 731570, 1024198, 1463140, 2048396, 2560495, 2926280, 4096792, 5120990, 10241980, 20483960]

約数ペア:

[(1, 20483960), (2, 10241980), (4, 5120990), (5, 4096792), (7, 2926280), (8, 2560495), (10, 2048396), (14, 1463140), (20, 1024198), (28, 731570), (35, 585256), (40, 512099), (49, 418040), (56, 365785), (70, 292628), (98, 209020), (140, 146314), (196, 104510), (245, 83608), (280, 73157), (343, 59720), (392, 52255), (490, 41804), (686, 29860), (980, 20902), (1372, 14930), (1493, 13720), (1715, 11944), (1960, 10451), (2744, 7465), (2986, 6860), (3430, 5972)]