208793960

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{1987}}^1$

素因数の和:2106

約数の個数: 64

約数和(自身を含む): 489525120

約数和(自身を除く): 280731160

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 71, 74, 142, 148, 185, 284, 296, 355, 370, 568, 710, 740, 1420, 1480, 1987, 2627, 2840, 3974, 5254, 7948, 9935, 10508, 13135, 15896, 19870, 21016, 26270, 39740, 52540, 73519, 79480, 105080, 141077, 147038, 282154, 294076, 367595, 564308, 588152, 705385, 735190, 1128616, 1410770, 1470380, 2821540, 2940760, 5219849, 5643080, 10439698, 20879396, 26099245, 41758792, 52198490, 104396980, 208793960]

約数ペア:

[(1, 208793960), (2, 104396980), (4, 52198490), (5, 41758792), (8, 26099245), (10, 20879396), (20, 10439698), (37, 5643080), (40, 5219849), (71, 2940760), (74, 2821540), (142, 1470380), (148, 1410770), (185, 1128616), (284, 735190), (296, 705385), (355, 588152), (370, 564308), (568, 367595), (710, 294076), (740, 282154), (1420, 147038), (1480, 141077), (1987, 105080), (2627, 79480), (2840, 73519), (3974, 52540), (5254, 39740), (7948, 26270), (9935, 21016), (10508, 19870), (13135, 15896)]