81562761

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{647}}^1$

素因数の和:715

約数の個数: 64

約数和(自身を含む): 149299200

約数和(自身を除く): 67736439

約数列:

[1, 3, 7, 9, 21, 23, 27, 29, 63, 69, 87, 161, 189, 203, 207, 261, 483, 609, 621, 647, 667, 783, 1449, 1827, 1941, 2001, 4347, 4529, 4669, 5481, 5823, 6003, 13587, 14007, 14881, 17469, 18009, 18763, 40761, 42021, 44643, 56289, 104167, 122283, 126063, 131341, 133929, 168867, 312501, 394023, 401787, 431549, 506601, 937503, 1182069, 1294647, 2812509, 3020843, 3546207, 3883941, 9062529, 11651823, 27187587, 81562761]

約数ペア:

[(1, 81562761), (3, 27187587), (7, 11651823), (9, 9062529), (21, 3883941), (23, 3546207), (27, 3020843), (29, 2812509), (63, 1294647), (69, 1182069), (87, 937503), (161, 506601), (189, 431549), (203, 401787), (207, 394023), (261, 312501), (483, 168867), (609, 133929), (621, 131341), (647, 126063), (667, 122283), (783, 104167), (1449, 56289), (1827, 44643), (1941, 42021), (2001, 40761), (4347, 18763), (4529, 18009), (4669, 17469), (5481, 14881), (5823, 14007), (6003, 13587)]