77872785

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{769}}^1$

素因数の和:977

約数の個数: 32

約数和(自身を含む): 128472960

約数和(自身を除く): 50600175

約数列:

[1, 3, 5, 15, 43, 129, 157, 215, 471, 645, 769, 785, 2307, 2355, 3845, 6751, 11535, 20253, 33067, 33755, 99201, 101265, 120733, 165335, 362199, 496005, 603665, 1810995, 5191519, 15574557, 25957595, 77872785]

約数ペア:

[(1, 77872785), (3, 25957595), (5, 15574557), (15, 5191519), (43, 1810995), (129, 603665), (157, 496005), (215, 362199), (471, 165335), (645, 120733), (769, 101265), (785, 99201), (2307, 33755), (2355, 33067), (3845, 20253), (6751, 11535)]