13293440

素因数分解:

$2^7\times 5^1\times {\mathrm{20771}}^1$

素因数の和:20790

約数の個数: 32

約数和(自身を含む): 31781160

約数和(自身を除く): 18487720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20771, 41542, 83084, 103855, 166168, 207710, 332336, 415420, 664672, 830840, 1329344, 1661680, 2658688, 3323360, 6646720, 13293440]

約数ペア:

[(1, 13293440), (2, 6646720), (4, 3323360), (5, 2658688), (8, 1661680), (10, 1329344), (16, 830840), (20, 664672), (32, 415420), (40, 332336), (64, 207710), (80, 166168), (128, 103855), (160, 83084), (320, 41542), (640, 20771)]