289651720

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{108079}}^1$

素因数の和:108157

約数の個数: 32

約数和(自身を含む): 661449600

約数和(自身を除く): 371797880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 108079, 216158, 432316, 540395, 864632, 1080790, 2161580, 4323160, 7241293, 14482586, 28965172, 36206465, 57930344, 72412930, 144825860, 289651720]

約数ペア:

[(1, 289651720), (2, 144825860), (4, 72412930), (5, 57930344), (8, 36206465), (10, 28965172), (20, 14482586), (40, 7241293), (67, 4323160), (134, 2161580), (268, 1080790), (335, 864632), (536, 540395), (670, 432316), (1340, 216158), (2680, 108079)]