68421990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:454

約数の個数: 128

約数和(自身を含む): 205535232

約数和(自身を除く): 137113242

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 71, 78, 91, 105, 130, 142, 182, 195, 210, 213, 273, 353, 355, 390, 426, 455, 497, 546, 706, 710, 910, 923, 994, 1059, 1065, 1365, 1491, 1765, 1846, 2118, 2130, 2471, 2485, 2730, 2769, 2982, 3530, 4589, 4615, 4942, 4970, 5295, 5538, 6461, 7413, 7455, 9178, 9230, 10590, 12355, 12922, 13767, 13845, 14826, 14910, 19383, 22945, 24710, 25063, 27534, 27690, 32123, 32305, 37065, 38766, 45890, 50126, 64246, 64610, 68835, 74130, 75189, 96369, 96915, 125315, 137670, 150378, 160615, 175441, 192738, 193830, 250630, 321230, 325819, 350882, 375945, 481845, 526323, 651638, 751890, 877205, 963690, 977457, 1052646, 1629095, 1754410, 1954914, 2280733, 2631615, 3258190, 4561466, 4887285, 5263230, 6842199, 9774570, 11403665, 13684398, 22807330, 34210995, 68421990]

約数ペア:

[(1, 68421990), (2, 34210995), (3, 22807330), (5, 13684398), (6, 11403665), (7, 9774570), (10, 6842199), (13, 5263230), (14, 4887285), (15, 4561466), (21, 3258190), (26, 2631615), (30, 2280733), (35, 1954914), (39, 1754410), (42, 1629095), (65, 1052646), (70, 977457), (71, 963690), (78, 877205), (91, 751890), (105, 651638), (130, 526323), (142, 481845), (182, 375945), (195, 350882), (210, 325819), (213, 321230), (273, 250630), (353, 193830), (355, 192738), (390, 175441), (426, 160615), (455, 150378), (497, 137670), (546, 125315), (706, 96915), (710, 96369), (910, 75189), (923, 74130), (994, 68835), (1059, 64610), (1065, 64246), (1365, 50126), (1491, 45890), (1765, 38766), (1846, 37065), (2118, 32305), (2130, 32123), (2471, 27690), (2485, 27534), (2730, 25063), (2769, 24710), (2982, 22945), (3530, 19383), (4589, 14910), (4615, 14826), (4942, 13845), (4970, 13767), (5295, 12922), (5538, 12355), (6461, 10590), (7413, 9230), (7455, 9178)]