78877880

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{32327}}^1$

素因数の和:32399

約数の個数: 32

約数和(自身を含む): 180390240

約数和(自身を除く): 101512360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 32327, 64654, 129308, 161635, 258616, 323270, 646540, 1293080, 1971947, 3943894, 7887788, 9859735, 15775576, 19719470, 39438940, 78877880]

約数ペア:

[(1, 78877880), (2, 39438940), (4, 19719470), (5, 15775576), (8, 9859735), (10, 7887788), (20, 3943894), (40, 1971947), (61, 1293080), (122, 646540), (244, 323270), (305, 258616), (488, 161635), (610, 129308), (1220, 64654), (2440, 32327)]