28778515

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{1777}}^1$

素因数の和:1902

約数の個数: 16

約数和(自身を含む): 35844480

約数和(自身を除く): 7065965

約数列:

[1, 5, 41, 79, 205, 395, 1777, 3239, 8885, 16195, 72857, 140383, 364285, 701915, 5755703, 28778515]

約数ペア:

[(1, 28778515), (5, 5755703), (41, 701915), (79, 364285), (205, 140383), (395, 72857), (1777, 16195), (3239, 8885)]