256142720

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{17401}}^1$

素因数の和:17443

約数の個数: 64

約数和(自身を含む): 639001440

約数和(自身を除く): 382858720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1472, 1840, 2944, 3680, 7360, 14720, 17401, 34802, 69604, 87005, 139208, 174010, 278416, 348020, 400223, 556832, 696040, 800446, 1113664, 1392080, 1600892, 2001115, 2227328, 2784160, 3201784, 4002230, 5568320, 6403568, 8004460, 11136640, 12807136, 16008920, 25614272, 32017840, 51228544, 64035680, 128071360, 256142720]

約数ペア:

[(1, 256142720), (2, 128071360), (4, 64035680), (5, 51228544), (8, 32017840), (10, 25614272), (16, 16008920), (20, 12807136), (23, 11136640), (32, 8004460), (40, 6403568), (46, 5568320), (64, 4002230), (80, 3201784), (92, 2784160), (115, 2227328), (128, 2001115), (160, 1600892), (184, 1392080), (230, 1113664), (320, 800446), (368, 696040), (460, 556832), (640, 400223), (736, 348020), (920, 278416), (1472, 174010), (1840, 139208), (2944, 87005), (3680, 69604), (7360, 34802), (14720, 17401)]