20255220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{859}}^1$

素因数の和:1005

約数の個数: 72

約数和(自身を含む): 61981920

約数和(自身を除く): 41726700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 859, 1179, 1310, 1572, 1718, 1965, 2358, 2577, 2620, 3436, 3930, 4295, 4716, 5154, 5895, 7731, 7860, 8590, 10308, 11790, 12885, 15462, 17180, 23580, 25770, 30924, 38655, 51540, 77310, 112529, 154620, 225058, 337587, 450116, 562645, 675174, 1012761, 1125290, 1350348, 1687935, 2025522, 2250580, 3375870, 4051044, 5063805, 6751740, 10127610, 20255220]

約数ペア:

[(1, 20255220), (2, 10127610), (3, 6751740), (4, 5063805), (5, 4051044), (6, 3375870), (9, 2250580), (10, 2025522), (12, 1687935), (15, 1350348), (18, 1125290), (20, 1012761), (30, 675174), (36, 562645), (45, 450116), (60, 337587), (90, 225058), (131, 154620), (180, 112529), (262, 77310), (393, 51540), (524, 38655), (655, 30924), (786, 25770), (859, 23580), (1179, 17180), (1310, 15462), (1572, 12885), (1718, 11790), (1965, 10308), (2358, 8590), (2577, 7860), (2620, 7731), (3436, 5895), (3930, 5154), (4295, 4716)]