19286480

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^2$

素因数の和:995

約数の個数: 30

約数和(自身を含む): 44932578

約数和(自身を除く): 25646098

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1964, 2455, 3928, 4910, 7856, 9820, 19640, 39280, 241081, 482162, 964324, 1205405, 1928648, 2410810, 3857296, 4821620, 9643240, 19286480]

約数ペア:

[(1, 19286480), (2, 9643240), (4, 4821620), (5, 3857296), (8, 2410810), (10, 1928648), (16, 1205405), (20, 964324), (40, 482162), (80, 241081), (491, 39280), (982, 19640), (1964, 9820), (2455, 7856), (3928, 4910)]