254894720

素因数分解:

$2^7\times 5^1\times {\mathrm{398273}}^1$

素因数の和:398292

約数の個数: 32

約数和(自身を含む): 609359220

約数和(自身を除く): 354464500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 398273, 796546, 1593092, 1991365, 3186184, 3982730, 6372368, 7965460, 12744736, 15930920, 25489472, 31861840, 50978944, 63723680, 127447360, 254894720]

約数ペア:

[(1, 254894720), (2, 127447360), (4, 63723680), (5, 50978944), (8, 31861840), (10, 25489472), (16, 15930920), (20, 12744736), (32, 7965460), (40, 6372368), (64, 3982730), (80, 3186184), (128, 1991365), (160, 1593092), (320, 796546), (640, 398273)]