18895060

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 41158656

約数和(自身を除く): 22263596

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 127, 172, 173, 215, 254, 346, 430, 508, 635, 692, 860, 865, 1270, 1730, 2540, 3460, 5461, 7439, 10922, 14878, 21844, 21971, 27305, 29756, 37195, 43942, 54610, 74390, 87884, 109220, 109855, 148780, 219710, 439420, 944753, 1889506, 3779012, 4723765, 9447530, 18895060]

約数ペア:

[(1, 18895060), (2, 9447530), (4, 4723765), (5, 3779012), (10, 1889506), (20, 944753), (43, 439420), (86, 219710), (127, 148780), (172, 109855), (173, 109220), (215, 87884), (254, 74390), (346, 54610), (430, 43942), (508, 37195), (635, 29756), (692, 27305), (860, 21971), (865, 21844), (1270, 14878), (1730, 10922), (2540, 7439), (3460, 5461)]