254193920

素因数分解:

$2^8\times 5^1\times {\mathrm{198589}}^1$

素因数の和:198610

約数の個数: 36

約数和(自身を含む): 608876940

約数和(自身を除く): 354683020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 198589, 397178, 794356, 992945, 1588712, 1985890, 3177424, 3971780, 6354848, 7943560, 12709696, 15887120, 25419392, 31774240, 50838784, 63548480, 127096960, 254193920]

約数ペア:

[(1, 254193920), (2, 127096960), (4, 63548480), (5, 50838784), (8, 31774240), (10, 25419392), (16, 15887120), (20, 12709696), (32, 7943560), (40, 6354848), (64, 3971780), (80, 3177424), (128, 1985890), (160, 1588712), (256, 992945), (320, 794356), (640, 397178), (1280, 198589)]