18657920

素因数分解:

$2^7\times 5^1\times {\mathrm{29153}}^1$

素因数の和:29172

約数の個数: 32

約数和(自身を含む): 44605620

約数和(自身を除く): 25947700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 29153, 58306, 116612, 145765, 233224, 291530, 466448, 583060, 932896, 1166120, 1865792, 2332240, 3731584, 4664480, 9328960, 18657920]

約数ペア:

[(1, 18657920), (2, 9328960), (4, 4664480), (5, 3731584), (8, 2332240), (10, 1865792), (16, 1166120), (20, 932896), (32, 583060), (40, 466448), (64, 291530), (80, 233224), (128, 145765), (160, 116612), (320, 58306), (640, 29153)]