18909636

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 46791360

約数和(自身を除く): 27881724

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 197, 228, 394, 421, 591, 788, 842, 1182, 1263, 1684, 2364, 2526, 3743, 5052, 7486, 7999, 11229, 14972, 15998, 22458, 23997, 31996, 44916, 47994, 82937, 95988, 165874, 248811, 331748, 497622, 995244, 1575803, 3151606, 4727409, 6303212, 9454818, 18909636]

約数ペア:

[(1, 18909636), (2, 9454818), (3, 6303212), (4, 4727409), (6, 3151606), (12, 1575803), (19, 995244), (38, 497622), (57, 331748), (76, 248811), (114, 165874), (197, 95988), (228, 82937), (394, 47994), (421, 44916), (591, 31996), (788, 23997), (842, 22458), (1182, 15998), (1263, 14972), (1684, 11229), (2364, 7999), (2526, 7486), (3743, 5052)]