18790570

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 35069760

約数和(自身を除く): 16279190

約数列:

[1, 2, 5, 10, 43, 86, 89, 178, 215, 430, 445, 491, 890, 982, 2455, 3827, 4910, 7654, 19135, 21113, 38270, 42226, 43699, 87398, 105565, 211130, 218495, 436990, 1879057, 3758114, 9395285, 18790570]

約数ペア:

[(1, 18790570), (2, 9395285), (5, 3758114), (10, 1879057), (43, 436990), (86, 218495), (89, 211130), (178, 105565), (215, 87398), (430, 43699), (445, 42226), (491, 38270), (890, 21113), (982, 19135), (2455, 7654), (3827, 4910)]