198017920

素因数分解:

$2^7\times 5^1\times {\mathrm{309403}}^1$

素因数の和:309422

約数の個数: 32

約数和(自身を含む): 473388120

約数和(自身を除く): 275370200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 309403, 618806, 1237612, 1547015, 2475224, 3094030, 4950448, 6188060, 9900896, 12376120, 19801792, 24752240, 39603584, 49504480, 99008960, 198017920]

約数ペア:

[(1, 198017920), (2, 99008960), (4, 49504480), (5, 39603584), (8, 24752240), (10, 19801792), (16, 12376120), (20, 9900896), (32, 6188060), (40, 4950448), (64, 3094030), (80, 2475224), (128, 1547015), (160, 1237612), (320, 618806), (640, 309403)]