79720020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2099}}^1$

素因数の和:2325

約数の個数: 72

約数和(自身を含む): 243079200

約数和(自身を除く): 163359180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 211, 422, 633, 844, 1055, 1266, 1899, 2099, 2110, 2532, 3165, 3798, 4198, 4220, 6297, 6330, 7596, 8396, 9495, 10495, 12594, 12660, 18891, 18990, 20990, 25188, 31485, 37782, 37980, 41980, 62970, 75564, 94455, 125940, 188910, 377820, 442889, 885778, 1328667, 1771556, 2214445, 2657334, 3986001, 4428890, 5314668, 6643335, 7972002, 8857780, 13286670, 15944004, 19930005, 26573340, 39860010, 79720020]

約数ペア:

[(1, 79720020), (2, 39860010), (3, 26573340), (4, 19930005), (5, 15944004), (6, 13286670), (9, 8857780), (10, 7972002), (12, 6643335), (15, 5314668), (18, 4428890), (20, 3986001), (30, 2657334), (36, 2214445), (45, 1771556), (60, 1328667), (90, 885778), (180, 442889), (211, 377820), (422, 188910), (633, 125940), (844, 94455), (1055, 75564), (1266, 62970), (1899, 41980), (2099, 37980), (2110, 37782), (2532, 31485), (3165, 25188), (3798, 20990), (4198, 18990), (4220, 18891), (6297, 12660), (6330, 12594), (7596, 10495), (8396, 9495)]