80577540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{997}}^1$

素因数の和:1461

約数の個数: 72

約数和(自身を含む): 245208600

約数和(自身を除く): 164631060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 449, 898, 997, 1347, 1796, 1994, 2245, 2694, 2991, 3988, 4041, 4490, 4985, 5388, 5982, 6735, 8082, 8973, 8980, 9970, 11964, 13470, 14955, 16164, 17946, 19940, 20205, 26940, 29910, 35892, 40410, 44865, 59820, 80820, 89730, 179460, 447653, 895306, 1342959, 1790612, 2238265, 2685918, 4028877, 4476530, 5371836, 6714795, 8057754, 8953060, 13429590, 16115508, 20144385, 26859180, 40288770, 80577540]

約数ペア:

[(1, 80577540), (2, 40288770), (3, 26859180), (4, 20144385), (5, 16115508), (6, 13429590), (9, 8953060), (10, 8057754), (12, 6714795), (15, 5371836), (18, 4476530), (20, 4028877), (30, 2685918), (36, 2238265), (45, 1790612), (60, 1342959), (90, 895306), (180, 447653), (449, 179460), (898, 89730), (997, 80820), (1347, 59820), (1796, 44865), (1994, 40410), (2245, 35892), (2694, 29910), (2991, 26940), (3988, 20205), (4041, 19940), (4490, 17946), (4985, 16164), (5388, 14955), (5982, 13470), (6735, 11964), (8082, 9970), (8973, 8980)]