78787280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:205

約数の個数: 160

約数和(自身を含む): 220485888

約数和(自身を除く): 141698608

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 71, 80, 88, 97, 104, 110, 130, 142, 143, 176, 194, 208, 220, 260, 284, 286, 355, 388, 440, 485, 520, 568, 572, 710, 715, 776, 781, 880, 923, 970, 1040, 1067, 1136, 1144, 1261, 1420, 1430, 1552, 1562, 1846, 1940, 2134, 2288, 2522, 2840, 2860, 3124, 3692, 3880, 3905, 4268, 4615, 5044, 5335, 5680, 5720, 6248, 6305, 6887, 7384, 7760, 7810, 8536, 9230, 10088, 10153, 10670, 11440, 12496, 12610, 13774, 13871, 14768, 15620, 17072, 18460, 20176, 20306, 21340, 25220, 27548, 27742, 31240, 34435, 36920, 40612, 42680, 50440, 50765, 55096, 55484, 62480, 68870, 69355, 73840, 75757, 81224, 85360, 89531, 100880, 101530, 110192, 110968, 137740, 138710, 151514, 162448, 179062, 203060, 221936, 275480, 277420, 303028, 358124, 378785, 406120, 447655, 550960, 554840, 606056, 716248, 757570, 812240, 895310, 984841, 1109680, 1212112, 1432496, 1515140, 1790620, 1969682, 3030280, 3581240, 3939364, 4924205, 6060560, 7162480, 7878728, 9848410, 15757456, 19696820, 39393640, 78787280]

約数ペア:

[(1, 78787280), (2, 39393640), (4, 19696820), (5, 15757456), (8, 9848410), (10, 7878728), (11, 7162480), (13, 6060560), (16, 4924205), (20, 3939364), (22, 3581240), (26, 3030280), (40, 1969682), (44, 1790620), (52, 1515140), (55, 1432496), (65, 1212112), (71, 1109680), (80, 984841), (88, 895310), (97, 812240), (104, 757570), (110, 716248), (130, 606056), (142, 554840), (143, 550960), (176, 447655), (194, 406120), (208, 378785), (220, 358124), (260, 303028), (284, 277420), (286, 275480), (355, 221936), (388, 203060), (440, 179062), (485, 162448), (520, 151514), (568, 138710), (572, 137740), (710, 110968), (715, 110192), (776, 101530), (781, 100880), (880, 89531), (923, 85360), (970, 81224), (1040, 75757), (1067, 73840), (1136, 69355), (1144, 68870), (1261, 62480), (1420, 55484), (1430, 55096), (1552, 50765), (1562, 50440), (1846, 42680), (1940, 40612), (2134, 36920), (2288, 34435), (2522, 31240), (2840, 27742), (2860, 27548), (3124, 25220), (3692, 21340), (3880, 20306), (3905, 20176), (4268, 18460), (4615, 17072), (5044, 15620), (5335, 14768), (5680, 13871), (5720, 13774), (6248, 12610), (6305, 12496), (6887, 11440), (7384, 10670), (7760, 10153), (7810, 10088), (8536, 9230)]