21751960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28621}}^1$

素因数の和:28651

約数の個数: 32

約数和(自身を含む): 51519600

約数和(自身を除く): 29767640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28621, 57242, 114484, 143105, 228968, 286210, 543799, 572420, 1087598, 1144840, 2175196, 2718995, 4350392, 5437990, 10875980, 21751960]

約数ペア:

[(1, 21751960), (2, 10875980), (4, 5437990), (5, 4350392), (8, 2718995), (10, 2175196), (19, 1144840), (20, 1087598), (38, 572420), (40, 543799), (76, 286210), (95, 228968), (152, 143105), (190, 114484), (380, 57242), (760, 28621)]