80944880

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1021}}^1$

素因数の和:2025

約数の個数: 40

約数和(自身を含む): 188571264

約数和(自身を除く): 107626384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1021, 1982, 2042, 3964, 4084, 4955, 5105, 7928, 8168, 9910, 10210, 15856, 16336, 19820, 20420, 39640, 40840, 79280, 81680, 1011811, 2023622, 4047244, 5059055, 8094488, 10118110, 16188976, 20236220, 40472440, 80944880]

約数ペア:

[(1, 80944880), (2, 40472440), (4, 20236220), (5, 16188976), (8, 10118110), (10, 8094488), (16, 5059055), (20, 4047244), (40, 2023622), (80, 1011811), (991, 81680), (1021, 79280), (1982, 40840), (2042, 39640), (3964, 20420), (4084, 19820), (4955, 16336), (5105, 15856), (7928, 10210), (8168, 9910)]