25530880

素因数分解:

$2^9\times 5^1\times {\mathrm{9973}}^1$

素因数の和:9996

約数の個数: 40

約数和(自身を含む): 61220412

約数和(自身を除く): 35689532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 9973, 19946, 39892, 49865, 79784, 99730, 159568, 199460, 319136, 398920, 638272, 797840, 1276544, 1595680, 2553088, 3191360, 5106176, 6382720, 12765440, 25530880]

約数ペア:

[(1, 25530880), (2, 12765440), (4, 6382720), (5, 5106176), (8, 3191360), (10, 2553088), (16, 1595680), (20, 1276544), (32, 797840), (40, 638272), (64, 398920), (80, 319136), (128, 199460), (160, 159568), (256, 99730), (320, 79784), (512, 49865), (640, 39892), (1280, 19946), (2560, 9973)]