678678507

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{644519}}^1$

素因数の和:644544

約数の個数: 20

約数和(自身を含む): 1091816880

約数和(自身を除く): 413138373

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 644519, 1933557, 5800671, 8378747, 17402013, 25136241, 52206039, 75408723, 226226169, 678678507]

約数ペア:

[(1, 678678507), (3, 226226169), (9, 75408723), (13, 52206039), (27, 25136241), (39, 17402013), (81, 8378747), (117, 5800671), (351, 1933557), (1053, 644519)]