18418906

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:534

約数の個数: 32

約数和(自身を含む): 31881600

約数和(自身を除く): 13462694

約数列:

[1, 2, 11, 22, 23, 46, 89, 178, 253, 409, 506, 818, 979, 1958, 2047, 4094, 4499, 8998, 9407, 18814, 22517, 36401, 45034, 72802, 103477, 206954, 400411, 800822, 837223, 1674446, 9209453, 18418906]

約数ペア:

[(1, 18418906), (2, 9209453), (11, 1674446), (22, 837223), (23, 800822), (46, 400411), (89, 206954), (178, 103477), (253, 72802), (409, 45034), (506, 36401), (818, 22517), (979, 18814), (1958, 9407), (2047, 8998), (4094, 4499)]