81231384

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:305

約数の個数: 128

約数和(自身を含む): 234662400

約数和(自身を除く): 153431016

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 19, 24, 26, 38, 39, 52, 57, 71, 76, 78, 104, 114, 142, 152, 156, 193, 213, 228, 247, 284, 312, 386, 426, 456, 494, 568, 579, 741, 772, 852, 923, 988, 1158, 1349, 1482, 1544, 1704, 1846, 1976, 2316, 2509, 2698, 2769, 2964, 3667, 3692, 4047, 4632, 5018, 5396, 5538, 5928, 7334, 7384, 7527, 8094, 10036, 10792, 11001, 11076, 13703, 14668, 15054, 16188, 17537, 20072, 22002, 22152, 27406, 29336, 30108, 32376, 35074, 41109, 44004, 47671, 52611, 54812, 60216, 70148, 82218, 88008, 95342, 105222, 109624, 140296, 143013, 164436, 178139, 190684, 210444, 260357, 286026, 328872, 356278, 381368, 420888, 520714, 534417, 572052, 712556, 781071, 1041428, 1068834, 1144104, 1425112, 1562142, 2082856, 2137668, 3124284, 3384641, 4275336, 6248568, 6769282, 10153923, 13538564, 20307846, 27077128, 40615692, 81231384]

約数ペア:

[(1, 81231384), (2, 40615692), (3, 27077128), (4, 20307846), (6, 13538564), (8, 10153923), (12, 6769282), (13, 6248568), (19, 4275336), (24, 3384641), (26, 3124284), (38, 2137668), (39, 2082856), (52, 1562142), (57, 1425112), (71, 1144104), (76, 1068834), (78, 1041428), (104, 781071), (114, 712556), (142, 572052), (152, 534417), (156, 520714), (193, 420888), (213, 381368), (228, 356278), (247, 328872), (284, 286026), (312, 260357), (386, 210444), (426, 190684), (456, 178139), (494, 164436), (568, 143013), (579, 140296), (741, 109624), (772, 105222), (852, 95342), (923, 88008), (988, 82218), (1158, 70148), (1349, 60216), (1482, 54812), (1544, 52611), (1704, 47671), (1846, 44004), (1976, 41109), (2316, 35074), (2509, 32376), (2698, 30108), (2769, 29336), (2964, 27406), (3667, 22152), (3692, 22002), (4047, 20072), (4632, 17537), (5018, 16188), (5396, 15054), (5538, 14668), (5928, 13703), (7334, 11076), (7384, 11001), (7527, 10792), (8094, 10036)]