81332860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{569}}^1\times {\mathrm{1021}}^1$

素因数の和:1606

約数の個数: 48

約数和(自身を含む): 195733440

約数和(自身を除く): 114400580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 569, 1021, 1138, 2042, 2276, 2845, 3983, 4084, 5105, 5690, 7147, 7966, 10210, 11380, 14294, 15932, 19915, 20420, 28588, 35735, 39830, 71470, 79660, 142940, 580949, 1161898, 2323796, 2904745, 4066643, 5809490, 8133286, 11618980, 16266572, 20333215, 40666430, 81332860]

約数ペア:

[(1, 81332860), (2, 40666430), (4, 20333215), (5, 16266572), (7, 11618980), (10, 8133286), (14, 5809490), (20, 4066643), (28, 2904745), (35, 2323796), (70, 1161898), (140, 580949), (569, 142940), (1021, 79660), (1138, 71470), (2042, 39830), (2276, 35735), (2845, 28588), (3983, 20420), (4084, 19915), (5105, 15932), (5690, 14294), (7147, 11380), (7966, 10210)]