1387421820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{126359}}^1$

素因数の和:126435

約数の個数: 72

約数和(自身を含む): 4277538720

約数和(自身を除く): 2890116900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 2196, 2745, 3660, 5490, 10980, 126359, 252718, 379077, 505436, 631795, 758154, 1137231, 1263590, 1516308, 1895385, 2274462, 2527180, 3790770, 4548924, 5686155, 7581540, 7707899, 11372310, 15415798, 22744620, 23123697, 30831596, 38539495, 46247394, 69371091, 77078990, 92494788, 115618485, 138742182, 154157980, 231236970, 277484364, 346855455, 462473940, 693710910, 1387421820]

約数ペア:

[(1, 1387421820), (2, 693710910), (3, 462473940), (4, 346855455), (5, 277484364), (6, 231236970), (9, 154157980), (10, 138742182), (12, 115618485), (15, 92494788), (18, 77078990), (20, 69371091), (30, 46247394), (36, 38539495), (45, 30831596), (60, 23123697), (61, 22744620), (90, 15415798), (122, 11372310), (180, 7707899), (183, 7581540), (244, 5686155), (305, 4548924), (366, 3790770), (549, 2527180), (610, 2274462), (732, 1895385), (915, 1516308), (1098, 1263590), (1220, 1137231), (1830, 758154), (2196, 631795), (2745, 505436), (3660, 379077), (5490, 252718), (10980, 126359)]