8720205

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 15168384

約数和(自身を除く): 6448179

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 197, 227, 591, 681, 985, 1135, 2561, 2951, 2955, 3405, 7683, 8853, 12805, 14755, 38415, 44265, 44719, 134157, 223595, 581347, 670785, 1744041, 2906735, 8720205]

約数ペア:

[(1, 8720205), (3, 2906735), (5, 1744041), (13, 670785), (15, 581347), (39, 223595), (65, 134157), (195, 44719), (197, 44265), (227, 38415), (591, 14755), (681, 12805), (985, 8853), (1135, 7683), (2561, 3405), (2951, 2955)]