81616000

素因数分解:

$2^7\times 5^3\times {\mathrm{5101}}^1$

素因数の和:5130

約数の個数: 64

約数和(自身を含む): 202957560

約数和(自身を除く): 121341560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1600, 2000, 3200, 4000, 5101, 8000, 10202, 16000, 20404, 25505, 40808, 51010, 81616, 102020, 127525, 163232, 204040, 255050, 326464, 408080, 510100, 637625, 652928, 816160, 1020200, 1275250, 1632320, 2040400, 2550500, 3264640, 4080800, 5101000, 8161600, 10202000, 16323200, 20404000, 40808000, 81616000]

約数ペア:

[(1, 81616000), (2, 40808000), (4, 20404000), (5, 16323200), (8, 10202000), (10, 8161600), (16, 5101000), (20, 4080800), (25, 3264640), (32, 2550500), (40, 2040400), (50, 1632320), (64, 1275250), (80, 1020200), (100, 816160), (125, 652928), (128, 637625), (160, 510100), (200, 408080), (250, 326464), (320, 255050), (400, 204040), (500, 163232), (640, 127525), (800, 102020), (1000, 81616), (1600, 51010), (2000, 40808), (3200, 25505), (4000, 20404), (5101, 16000), (8000, 10202)]