66455540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{977}}^1$

素因数の和:1184

約数の個数: 48

約数和(自身を含む): 147873600

約数和(自身を除く): 81418060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 179, 190, 358, 380, 716, 895, 977, 1790, 1954, 3401, 3580, 3908, 4885, 6802, 9770, 13604, 17005, 18563, 19540, 34010, 37126, 68020, 74252, 92815, 174883, 185630, 349766, 371260, 699532, 874415, 1748830, 3322777, 3497660, 6645554, 13291108, 16613885, 33227770, 66455540]

約数ペア:

[(1, 66455540), (2, 33227770), (4, 16613885), (5, 13291108), (10, 6645554), (19, 3497660), (20, 3322777), (38, 1748830), (76, 874415), (95, 699532), (179, 371260), (190, 349766), (358, 185630), (380, 174883), (716, 92815), (895, 74252), (977, 68020), (1790, 37126), (1954, 34010), (3401, 19540), (3580, 18563), (3908, 17005), (4885, 13604), (6802, 9770)]