20405979240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{103123}}^1$

素因数の和:103251

約数の個数: 128

約数和(自身を含む): 65487864960

約数和(自身を除く): 45081885720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 97, 102, 120, 136, 170, 194, 204, 255, 291, 340, 388, 408, 485, 510, 582, 680, 776, 970, 1020, 1164, 1455, 1649, 1940, 2040, 2328, 2910, 3298, 3880, 4947, 5820, 6596, 8245, 9894, 11640, 13192, 16490, 19788, 24735, 32980, 39576, 49470, 65960, 98940, 103123, 197880, 206246, 309369, 412492, 515615, 618738, 824984, 1031230, 1237476, 1546845, 1753091, 2062460, 2474952, 3093690, 3506182, 4124920, 5259273, 6187380, 7012364, 8765455, 10002931, 10518546, 12374760, 14024728, 17530910, 20005862, 21037092, 26296365, 30008793, 35061820, 40011724, 42074184, 50014655, 52592730, 60017586, 70123640, 80023448, 100029310, 105185460, 120035172, 150043965, 170049827, 200058620, 210370920, 240070344, 300087930, 340099654, 400117240, 510149481, 600175860, 680199308, 850249135, 1020298962, 1200351720, 1360398616, 1700498270, 2040597924, 2550747405, 3400996540, 4081195848, 5101494810, 6801993080, 10202989620, 20405979240]

約数ペア:

[(1, 20405979240), (2, 10202989620), (3, 6801993080), (4, 5101494810), (5, 4081195848), (6, 3400996540), (8, 2550747405), (10, 2040597924), (12, 1700498270), (15, 1360398616), (17, 1200351720), (20, 1020298962), (24, 850249135), (30, 680199308), (34, 600175860), (40, 510149481), (51, 400117240), (60, 340099654), (68, 300087930), (85, 240070344), (97, 210370920), (102, 200058620), (120, 170049827), (136, 150043965), (170, 120035172), (194, 105185460), (204, 100029310), (255, 80023448), (291, 70123640), (340, 60017586), (388, 52592730), (408, 50014655), (485, 42074184), (510, 40011724), (582, 35061820), (680, 30008793), (776, 26296365), (970, 21037092), (1020, 20005862), (1164, 17530910), (1455, 14024728), (1649, 12374760), (1940, 10518546), (2040, 10002931), (2328, 8765455), (2910, 7012364), (3298, 6187380), (3880, 5259273), (4947, 4124920), (5820, 3506182), (6596, 3093690), (8245, 2474952), (9894, 2062460), (11640, 1753091), (13192, 1546845), (16490, 1237476), (19788, 1031230), (24735, 824984), (32980, 618738), (39576, 515615), (49470, 412492), (65960, 309369), (98940, 206246), (103123, 197880)]