128740040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:423

約数の個数: 128

約数和(自身を含む): 346187520

約数和(自身を除く): 217447480

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 71, 88, 104, 110, 130, 142, 143, 220, 260, 284, 286, 317, 355, 440, 520, 568, 572, 634, 710, 715, 781, 923, 1144, 1268, 1420, 1430, 1562, 1585, 1846, 2536, 2840, 2860, 3124, 3170, 3487, 3692, 3905, 4121, 4615, 5720, 6248, 6340, 6974, 7384, 7810, 8242, 9230, 10153, 12680, 13948, 15620, 16484, 17435, 18460, 20306, 20605, 22507, 27896, 31240, 32968, 34870, 36920, 40612, 41210, 45014, 45331, 50765, 69740, 81224, 82420, 90028, 90662, 101530, 112535, 139480, 164840, 180056, 181324, 203060, 225070, 226655, 247577, 292591, 362648, 406120, 450140, 453310, 495154, 585182, 900280, 906620, 990308, 1170364, 1237885, 1462955, 1813240, 1980616, 2340728, 2475770, 2925910, 3218501, 4951540, 5851820, 6437002, 9903080, 11703640, 12874004, 16092505, 25748008, 32185010, 64370020, 128740040]

約数ペア:

[(1, 128740040), (2, 64370020), (4, 32185010), (5, 25748008), (8, 16092505), (10, 12874004), (11, 11703640), (13, 9903080), (20, 6437002), (22, 5851820), (26, 4951540), (40, 3218501), (44, 2925910), (52, 2475770), (55, 2340728), (65, 1980616), (71, 1813240), (88, 1462955), (104, 1237885), (110, 1170364), (130, 990308), (142, 906620), (143, 900280), (220, 585182), (260, 495154), (284, 453310), (286, 450140), (317, 406120), (355, 362648), (440, 292591), (520, 247577), (568, 226655), (572, 225070), (634, 203060), (710, 181324), (715, 180056), (781, 164840), (923, 139480), (1144, 112535), (1268, 101530), (1420, 90662), (1430, 90028), (1562, 82420), (1585, 81224), (1846, 69740), (2536, 50765), (2840, 45331), (2860, 45014), (3124, 41210), (3170, 40612), (3487, 36920), (3692, 34870), (3905, 32968), (4121, 31240), (4615, 27896), (5720, 22507), (6248, 20605), (6340, 20306), (6974, 18460), (7384, 17435), (7810, 16484), (8242, 15620), (9230, 13948), (10153, 12680)]