81132975

素因数分解:

$3^3\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1$

素因数の和:267

約数の個数: 144

約数和(自身を含む): 189987840

約数和(自身を除く): 108854865

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 27, 33, 35, 45, 49, 55, 63, 75, 77, 99, 105, 135, 147, 165, 175, 189, 223, 225, 231, 245, 275, 297, 315, 385, 441, 495, 525, 539, 669, 675, 693, 735, 825, 945, 1115, 1155, 1225, 1323, 1485, 1561, 1575, 1617, 1925, 2007, 2079, 2205, 2453, 2475, 2695, 3345, 3465, 3675, 4683, 4725, 4851, 5575, 5775, 6021, 6615, 7359, 7425, 7805, 8085, 10035, 10395, 10927, 11025, 12265, 13475, 14049, 14553, 16725, 17171, 17325, 22077, 23415, 24255, 30105, 32781, 33075, 36795, 39025, 40425, 42147, 50175, 51513, 51975, 54635, 61325, 66231, 70245, 72765, 85855, 98343, 110385, 117075, 120197, 121275, 150525, 154539, 163905, 183975, 210735, 257565, 273175, 295029, 331155, 351225, 360591, 363825, 429275, 463617, 491715, 551925, 600985, 772695, 819525, 1053675, 1081773, 1287825, 1475145, 1655775, 1802955, 2318085, 2458575, 3004925, 3245319, 3863475, 5408865, 7375725, 9014775, 11590425, 16226595, 27044325, 81132975]

約数ペア:

[(1, 81132975), (3, 27044325), (5, 16226595), (7, 11590425), (9, 9014775), (11, 7375725), (15, 5408865), (21, 3863475), (25, 3245319), (27, 3004925), (33, 2458575), (35, 2318085), (45, 1802955), (49, 1655775), (55, 1475145), (63, 1287825), (75, 1081773), (77, 1053675), (99, 819525), (105, 772695), (135, 600985), (147, 551925), (165, 491715), (175, 463617), (189, 429275), (223, 363825), (225, 360591), (231, 351225), (245, 331155), (275, 295029), (297, 273175), (315, 257565), (385, 210735), (441, 183975), (495, 163905), (525, 154539), (539, 150525), (669, 121275), (675, 120197), (693, 117075), (735, 110385), (825, 98343), (945, 85855), (1115, 72765), (1155, 70245), (1225, 66231), (1323, 61325), (1485, 54635), (1561, 51975), (1575, 51513), (1617, 50175), (1925, 42147), (2007, 40425), (2079, 39025), (2205, 36795), (2453, 33075), (2475, 32781), (2695, 30105), (3345, 24255), (3465, 23415), (3675, 22077), (4683, 17325), (4725, 17171), (4851, 16725), (5575, 14553), (5775, 14049), (6021, 13475), (6615, 12265), (7359, 11025), (7425, 10927), (7805, 10395), (8085, 10035)]