21000144

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1283}}^1$

素因数の和:1336

約数の個数: 80

約数和(自身を含む): 61138944

約数和(自身を除く): 40138800

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 31, 33, 44, 48, 62, 66, 88, 93, 124, 132, 176, 186, 248, 264, 341, 372, 496, 528, 682, 744, 1023, 1283, 1364, 1488, 2046, 2566, 2728, 3849, 4092, 5132, 5456, 7698, 8184, 10264, 14113, 15396, 16368, 20528, 28226, 30792, 39773, 42339, 56452, 61584, 79546, 84678, 112904, 119319, 159092, 169356, 225808, 238638, 318184, 338712, 437503, 477276, 636368, 677424, 875006, 954552, 1312509, 1750012, 1909104, 2625018, 3500024, 5250036, 7000048, 10500072, 21000144]

約数ペア:

[(1, 21000144), (2, 10500072), (3, 7000048), (4, 5250036), (6, 3500024), (8, 2625018), (11, 1909104), (12, 1750012), (16, 1312509), (22, 954552), (24, 875006), (31, 677424), (33, 636368), (44, 477276), (48, 437503), (62, 338712), (66, 318184), (88, 238638), (93, 225808), (124, 169356), (132, 159092), (176, 119319), (186, 112904), (248, 84678), (264, 79546), (341, 61584), (372, 56452), (496, 42339), (528, 39773), (682, 30792), (744, 28226), (1023, 20528), (1283, 16368), (1364, 15396), (1488, 14113), (2046, 10264), (2566, 8184), (2728, 7698), (3849, 5456), (4092, 5132)]