28791920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:258

約数の個数: 80

約数和(自身を含む): 70227648

約数和(自身を除く): 41435728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 71, 74, 80, 137, 142, 148, 185, 274, 284, 296, 355, 370, 548, 568, 592, 685, 710, 740, 1096, 1136, 1370, 1420, 1480, 2192, 2627, 2740, 2840, 2960, 5069, 5254, 5480, 5680, 9727, 10138, 10508, 10960, 13135, 19454, 20276, 21016, 25345, 26270, 38908, 40552, 42032, 48635, 50690, 52540, 77816, 81104, 97270, 101380, 105080, 155632, 194540, 202760, 210160, 359899, 389080, 405520, 719798, 778160, 1439596, 1799495, 2879192, 3598990, 5758384, 7197980, 14395960, 28791920]

約数ペア:

[(1, 28791920), (2, 14395960), (4, 7197980), (5, 5758384), (8, 3598990), (10, 2879192), (16, 1799495), (20, 1439596), (37, 778160), (40, 719798), (71, 405520), (74, 389080), (80, 359899), (137, 210160), (142, 202760), (148, 194540), (185, 155632), (274, 105080), (284, 101380), (296, 97270), (355, 81104), (370, 77816), (548, 52540), (568, 50690), (592, 48635), (685, 42032), (710, 40552), (740, 38908), (1096, 26270), (1136, 25345), (1370, 21016), (1420, 20276), (1480, 19454), (2192, 13135), (2627, 10960), (2740, 10508), (2840, 10138), (2960, 9727), (5069, 5680), (5254, 5480)]