81931905

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 163715904

約数和(自身を除く): 81783999

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 53, 55, 81, 99, 135, 159, 165, 265, 297, 347, 405, 477, 495, 583, 795, 891, 1041, 1431, 1485, 1735, 1749, 2385, 2915, 3123, 3817, 4293, 4455, 5205, 5247, 7155, 8745, 9369, 11451, 15615, 15741, 18391, 19085, 21465, 26235, 28107, 34353, 46845, 47223, 55173, 57255, 78705, 91955, 103059, 140535, 165519, 171765, 202301, 236115, 275865, 309177, 496557, 515295, 606903, 827595, 1011505, 1489671, 1545885, 1820709, 2482785, 3034515, 5462127, 7448355, 9103545, 16386381, 27310635, 81931905]

約数ペア:

[(1, 81931905), (3, 27310635), (5, 16386381), (9, 9103545), (11, 7448355), (15, 5462127), (27, 3034515), (33, 2482785), (45, 1820709), (53, 1545885), (55, 1489671), (81, 1011505), (99, 827595), (135, 606903), (159, 515295), (165, 496557), (265, 309177), (297, 275865), (347, 236115), (405, 202301), (477, 171765), (495, 165519), (583, 140535), (795, 103059), (891, 91955), (1041, 78705), (1431, 57255), (1485, 55173), (1735, 47223), (1749, 46845), (2385, 34353), (2915, 28107), (3123, 26235), (3817, 21465), (4293, 19085), (4455, 18391), (5205, 15741), (5247, 15615), (7155, 11451), (8745, 9369)]