68401980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1801}}^1$

素因数の和:2027

約数の個数: 72

約数和(自身を含む): 208585104

約数和(自身を除く): 140183124

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, 1801, 1899, 2110, 2532, 3165, 3602, 3798, 4220, 5403, 6330, 7204, 7596, 9005, 9495, 10806, 12660, 16209, 18010, 18990, 21612, 27015, 32418, 36020, 37980, 54030, 64836, 81045, 108060, 162090, 324180, 380011, 760022, 1140033, 1520044, 1900055, 2280066, 3420099, 3800110, 4560132, 5700165, 6840198, 7600220, 11400330, 13680396, 17100495, 22800660, 34200990, 68401980]

約数ペア:

[(1, 68401980), (2, 34200990), (3, 22800660), (4, 17100495), (5, 13680396), (6, 11400330), (9, 7600220), (10, 6840198), (12, 5700165), (15, 4560132), (18, 3800110), (20, 3420099), (30, 2280066), (36, 1900055), (45, 1520044), (60, 1140033), (90, 760022), (180, 380011), (211, 324180), (422, 162090), (633, 108060), (844, 81045), (1055, 64836), (1266, 54030), (1801, 37980), (1899, 36020), (2110, 32418), (2532, 27015), (3165, 21612), (3602, 18990), (3798, 18010), (4220, 16209), (5403, 12660), (6330, 10806), (7204, 9495), (7596, 9005)]