21080490777

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1\times {\mathrm{1103}}^1$

素因数の和:1654

約数の個数: 48

約数和(自身を含む): 31434324480

約数和(自身を除く): 10353833703

約数列:

[1, 3, 9, 53, 103, 159, 309, 389, 477, 927, 1103, 1167, 3309, 3501, 5459, 9927, 16377, 20617, 40067, 49131, 58459, 61851, 113609, 120201, 175377, 185553, 340827, 360603, 429067, 526131, 1022481, 1287201, 2123551, 3861603, 6021277, 6370653, 18063831, 19111959, 22740551, 44193901, 54191493, 68221653, 132581703, 204664959, 397745109, 2342276753, 7026830259, 21080490777]

約数ペア:

[(1, 21080490777), (3, 7026830259), (9, 2342276753), (53, 397745109), (103, 204664959), (159, 132581703), (309, 68221653), (389, 54191493), (477, 44193901), (927, 22740551), (1103, 19111959), (1167, 18063831), (3309, 6370653), (3501, 6021277), (5459, 3861603), (9927, 2123551), (16377, 1287201), (20617, 1022481), (40067, 526131), (49131, 429067), (58459, 360603), (61851, 340827), (113609, 185553), (120201, 175377)]