25605760

素因数分解:

$2^7\times 5^1\times {\mathrm{40009}}^1$

素因数の和:40028

約数の個数: 32

約数和(自身を含む): 61215300

約数和(自身を除く): 35609540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 40009, 80018, 160036, 200045, 320072, 400090, 640144, 800180, 1280288, 1600360, 2560576, 3200720, 5121152, 6401440, 12802880, 25605760]

約数ペア:

[(1, 25605760), (2, 12802880), (4, 6401440), (5, 5121152), (8, 3200720), (10, 2560576), (16, 1600360), (20, 1280288), (32, 800180), (40, 640144), (64, 400090), (80, 320072), (128, 200045), (160, 160036), (320, 80018), (640, 40009)]